GB816078A - Improvements in electric lanterns for outdoor illumination - Google Patents
Improvements in electric lanterns for outdoor illuminationInfo
- Publication number
- GB816078A GB816078A GB34983/56A GB3498356A GB816078A GB 816078 A GB816078 A GB 816078A GB 34983/56 A GB34983/56 A GB 34983/56A GB 3498356 A GB3498356 A GB 3498356A GB 816078 A GB816078 A GB 816078A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- lamps
- wall
- canopy
- street
- 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
- 241001465382 Physalis alkekengi Species 0.000 title abstract 3
- 238000005286 illumination Methods 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
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
- F21V29/15—Thermal insulation
-
- 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
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
- F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
Abstract
816,078. Street &c. lamps. BRITISH THOMSON-HOUSTON CO. Ltd. Oct. 22, 1957 [Nov. 15, 1956], No. 34983/56. Class 75(4) [Also in Group XL(a)] In an electric lantern primarily for outdoor illumination such as street-lighting and comprising a plurality of tubular fluorescent-lamps mounted horizontally within a light transmitting vessel seated against the ingress of dirt and moisture, an electric fan effective during operation of the lantern provides a stream or streams of relatively cool air for cooling a small area of the wall of each lamp located at or near the top of the lamp enclosure so that liquid mercury within the lamp envelope will automatically locate itself at the cooled part of the lamp wall whereby its temperature and hence the gas and/or vapour pressure of the lamp can be controlled independently of the temperature of the major part of the wall and thereby to refrain the lamp from suffering a deterioration in light output due to increase in said pressure above a certain value. As shown, the cooling fan 16 is mounted together with the control gear for the several lamps 15 in an upper compartment 13 thermally shielded from the lamps and formed by inverted channel members 8 supported at its ends on lamp-holder mounting plates 7 tied together also by a tie bar 9, the supporting structure being hingedly secured on one side at 10 to the canopy structure 4, screw means 11 releasably retaining the other side to the canopy. The fan draws relatively cool air from the upper compartment 13 and projects it through ducts 17 on to small areas of the walls of the upper lamps. A plane reflector 12 extends over the entire length of the vessel 1 and coacts with the canopy structure 4 to define the enclosure 13 and thermally shield this latter from the lamps.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816078A true GB816078A (en) | 1959-07-08 |
Family
ID=1744129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34983/56A Expired GB816078A (en) | 1956-11-15 | Improvements in electric lanterns for outdoor illumination |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB816078A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3258587A (en) * | 1966-06-28 | Suspended ceiling construction | ||
| DE19814300A1 (en) * | 1998-03-31 | 1999-10-07 | Volkswagen Ag | Headlights or lights |
-
1956
- 1956-11-15 GB GB34983/56A patent/GB816078A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3258587A (en) * | 1966-06-28 | Suspended ceiling construction | ||
| DE19814300A1 (en) * | 1998-03-31 | 1999-10-07 | Volkswagen Ag | Headlights or lights |
| DE19814300B4 (en) * | 1998-03-31 | 2008-09-25 | Bernhard Weber | Headlight or light |
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