FR750412A - Lighting fixtures improvements - Google Patents

Lighting fixtures improvements

Info

Publication number
FR750412A
FR750412A FR750412DA FR750412A FR 750412 A FR750412 A FR 750412A FR 750412D A FR750412D A FR 750412DA FR 750412 A FR750412 A FR 750412A
Authority
FR
France
Prior art keywords
lighting fixtures
fixtures
lighting
fixtures improvements
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
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.)
G Leroy Et P Pougin SA Des Ets
Original Assignee
G Leroy Et P Pougin SA Des Ets
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 G Leroy Et P Pougin SA Des Ets filed Critical G Leroy Et P Pougin SA Des Ets
Application granted granted Critical
Publication of FR750412A publication Critical patent/FR750412A/en
Expired 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
    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/12—Flameproof or explosion-proof arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR750412D 1932-05-07 1932-05-07 Lighting fixtures improvements Expired FR750412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR750412T 1932-05-07

Publications (1)

Publication Number Publication Date
FR750412A true FR750412A (en) 1933-08-10

Family

ID=9151010

Family Applications (1)

Application Number Title Priority Date Filing Date
FR750412D Expired FR750412A (en) 1932-05-07 1932-05-07 Lighting fixtures improvements

Country Status (1)

Country Link
FR (1) FR750412A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2618738A (en) * 1950-06-22 1952-11-18 Gen Electric Air cooled light projector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2618738A (en) * 1950-06-22 1952-11-18 Gen Electric Air cooled light projector

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