FR2379757A1 - Film projector with air cooling system - has cylindrical finned body with inner coaxial skin defining cooling passageway for closed loop air flow - Google Patents

Film projector with air cooling system - has cylindrical finned body with inner coaxial skin defining cooling passageway for closed loop air flow

Info

Publication number
FR2379757A1
FR2379757A1 FR7703167A FR7703167A FR2379757A1 FR 2379757 A1 FR2379757 A1 FR 2379757A1 FR 7703167 A FR7703167 A FR 7703167A FR 7703167 A FR7703167 A FR 7703167A FR 2379757 A1 FR2379757 A1 FR 2379757A1
Authority
FR
France
Prior art keywords
closed loop
air flow
film projector
inner coaxial
cooling system
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
FR7703167A
Other languages
French (fr)
Other versions
FR2379757B1 (en
Inventor
Jean Dernoncourt
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.)
Fives Cail Babcock SA
Original Assignee
Fives Cail Babcock SA
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 Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to FR7703167A priority Critical patent/FR2379757A1/en
Publication of FR2379757A1 publication Critical patent/FR2379757A1/en
Application granted granted Critical
Publication of FR2379757B1 publication Critical patent/FR2379757B1/fr
Granted 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Projection Apparatus (AREA)

Abstract

A projector having a closed cylindrical body has a cylindrical skin disposed coaxially within the body to form an annular passageway between the body and the skin. A fan is included within the projector circulating air via passages surrounding the mirrors and long support, and the annular passageway in a closed circuit. The outer cylindrical body has projecting cooling fins removing heat from the air as it circulates in the closed system.
FR7703167A 1977-02-04 1977-02-04 Film projector with air cooling system - has cylindrical finned body with inner coaxial skin defining cooling passageway for closed loop air flow Granted FR2379757A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7703167A FR2379757A1 (en) 1977-02-04 1977-02-04 Film projector with air cooling system - has cylindrical finned body with inner coaxial skin defining cooling passageway for closed loop air flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7703167A FR2379757A1 (en) 1977-02-04 1977-02-04 Film projector with air cooling system - has cylindrical finned body with inner coaxial skin defining cooling passageway for closed loop air flow

Publications (2)

Publication Number Publication Date
FR2379757A1 true FR2379757A1 (en) 1978-09-01
FR2379757B1 FR2379757B1 (en) 1981-01-09

Family

ID=9186306

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703167A Granted FR2379757A1 (en) 1977-02-04 1977-02-04 Film projector with air cooling system - has cylindrical finned body with inner coaxial skin defining cooling passageway for closed loop air flow

Country Status (1)

Country Link
FR (1) FR2379757A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624600A (en) * 1969-06-27 1971-11-30 Schoeffel Instrument Corp Searchlight of the high-pressure arc lamp-type having automatic shutter means

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624600A (en) * 1969-06-27 1971-11-30 Schoeffel Instrument Corp Searchlight of the high-pressure arc lamp-type having automatic shutter means

Also Published As

Publication number Publication date
FR2379757B1 (en) 1981-01-09

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Legal Events

Date Code Title Description
ST Notification of lapse