GB391117A - Improvements relating to motor vehicle electric lamps - Google Patents
Improvements relating to motor vehicle electric lampsInfo
- Publication number
- GB391117A GB391117A GB28525/31A GB2852531A GB391117A GB 391117 A GB391117 A GB 391117A GB 28525/31 A GB28525/31 A GB 28525/31A GB 2852531 A GB2852531 A GB 2852531A GB 391117 A GB391117 A GB 391117A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- motor vehicle
- downwardly
- improvements relating
- vehicle electric
- 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
- F21V5/00—Refractors for light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/28—Cover glass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
391,117. Vehicle lamps. LUCAS, Ltd., J. and LUCAS, 0., Great King Street, Birmingham. Oct. 14, 1931, No. 28525. [Classes 75 (ii) and 75 (iv).] Lantern fronts.-In a vehicle lamp in which the electric lamp bulb is provided with a screen in association with one of a pair of filaments, a refracting device is arranged at the front of, or within, the lamp so that the upper side of the forward portion of the screened beam may be inclined downwardly without interfering with the effectiveness of the normal beam. In the form shown, the lower half of the front glass a is formed with a number of refracting surfaces b which refract upwardly the lower portion c of the normal beam from the focal filament s, the whole lamp being slightly downwardly inclined. Alternatively, the refracting surfaces may be formed in the upper half of the front glass so as to refract downwardly the upper half d of the normal beam and the beam e from the screened filament h.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB28525/31A GB391117A (en) | 1931-10-14 | 1931-10-14 | Improvements relating to motor vehicle electric lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB28525/31A GB391117A (en) | 1931-10-14 | 1931-10-14 | Improvements relating to motor vehicle electric lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB391117A true GB391117A (en) | 1933-04-18 |
Family
ID=10277008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28525/31A Expired GB391117A (en) | 1931-10-14 | 1931-10-14 | Improvements relating to motor vehicle electric lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB391117A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2678996A (en) * | 1950-01-28 | 1954-05-18 | Johnson Elmer | Nonglare automobile headlight |
GB2136943A (en) * | 1983-03-08 | 1984-09-26 | Cibie Projecteurs | Automobile headlamp with inclined front glass |
-
1931
- 1931-10-14 GB GB28525/31A patent/GB391117A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2678996A (en) * | 1950-01-28 | 1954-05-18 | Johnson Elmer | Nonglare automobile headlight |
GB2136943A (en) * | 1983-03-08 | 1984-09-26 | Cibie Projecteurs | Automobile headlamp with inclined front glass |
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