GB188210A - - Google Patents
Info
- Publication number
- GB188210A GB188210A GB30432/21A GB3043221A GB188210A GB 188210 A GB188210 A GB 188210A GB 30432/21 A GB30432/21 A GB 30432/21A GB 3043221 A GB3043221 A GB 3043221A GB 188210 A GB188210 A GB 188210A
- Authority
- GB
- United Kingdom
- 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
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- 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)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE188210T | 1921-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB188210A true GB188210A (en) | 1922-11-09 |
Family
ID=31892905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30432/21A Expired GB188210A (en) | 1921-10-31 | 1921-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB188210A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3628601A (en) * | 1970-03-23 | 1971-12-21 | Advanced Patent Technology Inc | Apparatus for cooling reflector walls |
| FR2584479A1 (en) * | 1985-07-03 | 1987-01-09 | Ianiro Quartzcolor Spa | LIGHT PROJECTOR WITH ENHANCED AIR CIRCULATION |
-
1921
- 1921-11-15 GB GB30432/21A patent/GB188210A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3628601A (en) * | 1970-03-23 | 1971-12-21 | Advanced Patent Technology Inc | Apparatus for cooling reflector walls |
| FR2584479A1 (en) * | 1985-07-03 | 1987-01-09 | Ianiro Quartzcolor Spa | LIGHT PROJECTOR WITH ENHANCED AIR CIRCULATION |