FR750412A - Lighting fixtures improvements - Google Patents
Lighting fixtures improvementsInfo
- 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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2618738A (en) * | 1950-06-22 | 1952-11-18 | Gen Electric | Air cooled light projector |
-
1932
- 1932-05-07 FR FR750412D patent/FR750412A/en not_active Expired
Cited By (1)
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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