GB837830A - An improved cooling device for projecting lamps - Google Patents

An improved cooling device for projecting lamps

Info

Publication number
GB837830A
GB837830A GB28014/57A GB2801457A GB837830A GB 837830 A GB837830 A GB 837830A GB 28014/57 A GB28014/57 A GB 28014/57A GB 2801457 A GB2801457 A GB 2801457A GB 837830 A GB837830 A GB 837830A
Authority
GB
United Kingdom
Prior art keywords
bulb
lamp
sept
walls
cooling device
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
GB28014/57A
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.)
Microtecnica SRL
Original Assignee
Microtecnica SRL
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 Microtecnica SRL filed Critical Microtecnica SRL
Publication of GB837830A publication Critical patent/GB837830A/en
Expired 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)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

837,830. Cooling projector lamps. MICROTECNICA S.p.A. Sept. 5, 1957 [Sept. 8, 1956], No. 28014/57. Class 75(4) In a film projector lamp 1, heat from the lamp bulb 2 is dissipated by a double walled metal casing 3, 4, the inner wall 3 of which closely surrounds the bulb 2 is blackened on its internal surface, and is integrally spacedly connected to the outer wall 4 by longitudinally extending radial vanes 5. A rotary fan 6 sited in the lamp housing below the bulb 2 drives cooling air between the walls 3, 4 through the channels defined by the vanes 5. A front opening 8 in the walls 3, 4 provide for emission of the light from the bulb, and a rear opening 9 houses the reflector 10.
GB28014/57A 1956-09-08 1957-09-05 An improved cooling device for projecting lamps Expired GB837830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT837830X 1956-09-08

Publications (1)

Publication Number Publication Date
GB837830A true GB837830A (en) 1960-06-15

Family

ID=11323858

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28014/57A Expired GB837830A (en) 1956-09-08 1957-09-05 An improved cooling device for projecting lamps

Country Status (1)

Country Link
GB (1) GB837830A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986007167A1 (en) * 1985-05-31 1986-12-04 Constantin Systems, Inc. Thermal management system for an episcopic image projector
CN113917772A (en) * 2021-10-15 2022-01-11 峰米(重庆)创新科技有限公司 Projector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986007167A1 (en) * 1985-05-31 1986-12-04 Constantin Systems, Inc. Thermal management system for an episcopic image projector
US4682868A (en) * 1985-05-31 1987-07-28 Constantin Systems, Inc. Thermal management system for an episcopic image projector
CN113917772A (en) * 2021-10-15 2022-01-11 峰米(重庆)创新科技有限公司 Projector

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