GB312333A - Improvements in or relating to illuminating devices - Google Patents
Improvements in or relating to illuminating devicesInfo
- Publication number
- GB312333A GB312333A GB24190/28A GB2419028A GB312333A GB 312333 A GB312333 A GB 312333A GB 24190/28 A GB24190/28 A GB 24190/28A GB 2419028 A GB2419028 A GB 2419028A GB 312333 A GB312333 A GB 312333A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- reflector
- bulb
- casing
- rejector
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K7/00—Lamps for purposes other than general lighting
- H01K7/02—Lamps for purposes other than general lighting for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
312,333. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. May 26, 1928, [Convention date]. Searchlights; vehicle and like lamps; electric lamp casings. - A lamp especially adapted for aircraft, comprises an incandescent lamp with a concentrated filament 14 and a condensing bulb 15, the lamp extending through a lateral aperture into a rejector 10 so that the filament is at the focus and the bulb part 15 outside the reflector. The axis of the lamp being inclined to that of the reflector, the rejector can be dipped or raised through a fairly wide angle without sacrificing the cooling effect of the bulb 15. For use on aircraft the surrounding casing 19 is streamlined and the reflector is secured to it by a gimbal-ring construction 19. The lamp is carried from the reflector by a holder 16 and brackets 17, and the casing is mounted by bolts 20 and rubber pads 21. By housing the bulb 15 and other protruding parts within the structure of the aeroplane a shallow casing can be used, Fig. 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL312333X | 1928-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB312333A true GB312333A (en) | 1929-07-11 |
Family
ID=19783671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24190/28A Expired GB312333A (en) | 1928-05-26 | 1928-08-22 | Improvements in or relating to illuminating devices |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR656576A (en) |
GB (1) | GB312333A (en) |
NL (1) | NL23853C (en) |
-
0
- NL NL23853D patent/NL23853C/xx active
-
1928
- 1928-06-27 FR FR656576D patent/FR656576A/en not_active Expired
- 1928-08-22 GB GB24190/28A patent/GB312333A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL23853C (en) | |
FR656576A (en) | 1929-05-10 |
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