FR2452728A1 - Air cooling system for projector - incorporates radial fan for low noise and light screening - Google Patents

Air cooling system for projector - incorporates radial fan for low noise and light screening

Info

Publication number
FR2452728A1
FR2452728A1 FR8006677A FR8006677A FR2452728A1 FR 2452728 A1 FR2452728 A1 FR 2452728A1 FR 8006677 A FR8006677 A FR 8006677A FR 8006677 A FR8006677 A FR 8006677A FR 2452728 A1 FR2452728 A1 FR 2452728A1
Authority
FR
France
Prior art keywords
radial fan
projector
cooling system
low noise
air cooling
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
FR8006677A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2452728A1 publication Critical patent/FR2452728A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Abstract

An air blower cooling device is for an overhead projector or similar optical equipment. It has a radial fan (3) inside the double end wall of the lamp housing to draw the warm air out of the housing while preventing light from passing through the fan. The radial fan is a large dia., low speed design for quiet operation. The air ducts do not pass directly through the double wall, as in the case of axial impellers, with no light loss. The radial fan operates at a high efficiency with low power and speed, and with a narrow profile.
FR8006677A 1979-03-29 1980-03-26 Air cooling system for projector - incorporates radial fan for low noise and light screening Pending FR2452728A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792912360 DE2912360A1 (en) 1979-03-29 1979-03-29 COOLED OPTICAL DEVICE

Publications (1)

Publication Number Publication Date
FR2452728A1 true FR2452728A1 (en) 1980-10-24

Family

ID=6066732

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8006677A Pending FR2452728A1 (en) 1979-03-29 1980-03-26 Air cooling system for projector - incorporates radial fan for low noise and light screening

Country Status (5)

Country Link
JP (1) JPS5831571B2 (en)
DE (1) DE2912360A1 (en)
DK (1) DK133880A (en)
FR (1) FR2452728A1 (en)
IT (1) IT1130324B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408138A (en) * 1966-08-04 1968-10-29 Inflight Motion Pictures Inc Cooling apparatus for motion picture projector

Also Published As

Publication number Publication date
IT8020908A0 (en) 1980-03-26
JPS5831571B2 (en) 1983-07-07
DK133880A (en) 1980-09-30
DE2912360A1 (en) 1980-10-16
IT1130324B (en) 1986-06-11
JPS55133026A (en) 1980-10-16

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