GB391718A - Improvements in illumination appliances - Google Patents
Improvements in illumination appliancesInfo
- Publication number
- GB391718A GB391718A GB3402232A GB3402232A GB391718A GB 391718 A GB391718 A GB 391718A GB 3402232 A GB3402232 A GB 3402232A GB 3402232 A GB3402232 A GB 3402232A GB 391718 A GB391718 A GB 391718A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- lamp
- lighting
- lamps
- light source
- 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
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
391,718. Street &c. lamps. GENERAL ELECTRIC CO., Ltd. and DAMANT, E. L. B., Magnet House, Kingsway, London. Dec. 1, 1932, No. 34022. [Class 75 (iv).] In a system of directional lighting in which the beams from a number of lamps are directed through divergent angles extending laterally in a horizontal plane, particularly applicable to street lighting, each lamp is provided at one side with a screen which serves to shield an observer approaching the beam from that side along a path which is transverse to the beam, the screen being extended in front of the light source to meet a vertical plane through the light source substantially normal to the transverse path. In the form shown, each lamp 5 has translucent glass sides 11, 12 and a clear glass front 6 having a narrow margin 7 of opal or other translucent glass. Alternatively, the margin may be opaque and may extend about half-way across the front. An electric lamp bulb 8 is arranged near the side 12, a troughshaped reflector 9 having its focal line parallel to the kerb being disposed behind the bulb and another reflector above it so as to produce a divergent lateral beam 13. The upper part of the reflector 9 may be made rough to produce diffused local lighting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3402232A GB391718A (en) | 1932-12-01 | 1932-12-01 | Improvements in illumination appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3402232A GB391718A (en) | 1932-12-01 | 1932-12-01 | Improvements in illumination appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB391718A true GB391718A (en) | 1933-05-04 |
Family
ID=10360386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3402232A Expired GB391718A (en) | 1932-12-01 | 1932-12-01 | Improvements in illumination appliances |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB391718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2213576A (en) * | 1987-12-11 | 1989-08-16 | Michael Andrew Cunningham | Improvements relating to road lighting appliances |
-
1932
- 1932-12-01 GB GB3402232A patent/GB391718A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2213576A (en) * | 1987-12-11 | 1989-08-16 | Michael Andrew Cunningham | Improvements relating to road lighting appliances |
| GB2213576B (en) * | 1987-12-11 | 1991-09-25 | Michael Andrew Cunningham | Improvements relating to road lighting appliances |
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