GB477560A - Improvements in or relating to electric lighting units - Google Patents
Improvements in or relating to electric lighting unitsInfo
- Publication number
- GB477560A GB477560A GB19804/36A GB1980436A GB477560A GB 477560 A GB477560 A GB 477560A GB 19804/36 A GB19804/36 A GB 19804/36A GB 1980436 A GB1980436 A GB 1980436A GB 477560 A GB477560 A GB 477560A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflectors
- source
- stops
- light
- opposite sides
- 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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
- F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/05—Optical design plane
-
- 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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/0025—Combination of two or more reflectors for a single light source
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
Abstract
477,560. Street &c. lamps. REVO ELECTRIC CO., Ltd., and REEVES, F. H. July 17, 1936, No. 19804. [Classes 75 (ii) and 75 (iv)] In a lighting unit, more particularly for street lighting, comprising an elongated source disposed horizontally beneath an open lantern incorporating a pair of overhead reflectors i<1>, i<2> and a lower reflecting device for directing light on to the upper reflectors, the lower reflecting device comprises a pair of separate lower reflectors k<1>, k<2> spaced apart on opposite sides of the source so as to permit direct downward emission of light but prevent glare within spaced zones on opposite sides of the unit. The lantern structure includes end frames c<1> and c<2>, tie rods d and f and a cover b. The end frame c<1> carries a lamp holder e and from the rod f is suspended a longitudinally adjustable cage g having springs h for supporting the free end of the lamp. The reflectors k<1> and k<2> are supported between pairs of brackets c<4> and c<5> incorporated in the end frames and may be mounted, as shown in Fig. 2, resting in the lower of two sets of slots c<10>, c<11> and on the upper of two sets of stops c<8>, c<9> so as to reflect light from the source on to the upper reflectors or in the upper slots and on the lower stops so as to reflect light from the source downwardly and outwardly. Double-armed lever catches n<1> and n<2> operated by rotatable spring plungers o<1> and o<2> and co-operating with stops p<1> and p<2> serve to hold lower reflectors in either position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB19804/36A GB477560A (en) | 1936-07-17 | 1936-07-17 | Improvements in or relating to electric lighting units |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB19804/36A GB477560A (en) | 1936-07-17 | 1936-07-17 | Improvements in or relating to electric lighting units |
Publications (1)
Publication Number | Publication Date |
---|---|
GB477560A true GB477560A (en) | 1938-01-03 |
Family
ID=10135500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19804/36A Expired GB477560A (en) | 1936-07-17 | 1936-07-17 | Improvements in or relating to electric lighting units |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB477560A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2717954A (en) * | 1950-08-16 | 1955-09-13 | Gen Electric | Elongated roadway luminaire |
US3197629A (en) * | 1963-01-17 | 1965-07-27 | Electrical Products Cons | Aircraft warning lights for towers |
US4933821A (en) * | 1989-05-05 | 1990-06-12 | Minnesota Mining And Manufacturing Company | Reflector edge illuminator for fluorescent light |
EP0413088A1 (en) * | 1989-08-17 | 1991-02-20 | Siemens Aktiengesellschaft | Work lamp |
DE4024738A1 (en) * | 1990-08-03 | 1992-02-06 | Siemens Ag | Indirect reflective luminaire for even illumination of large area - has fluorescent lamp(s) within furrow-shaped auxiliary reflector opposite main reflector |
DE4443741A1 (en) * | 1994-12-08 | 1996-06-13 | Hartmut S Engel | lamp |
DE29519708U1 (en) * | 1995-12-12 | 1997-04-10 | Zumtobel Licht Gmbh, Dornbirn | Luminaire with at least one elongated lamp |
DE19620209A1 (en) * | 1996-05-20 | 1997-11-27 | Zumtobel Licht | Luminaire with a profiled base body as a support for at least one lamp |
DE29715568U1 (en) * | 1997-09-01 | 1997-12-11 | Abele & Geiger GmbH, 70188 Stuttgart | Mirror housing for an outdoor lamp |
CN105202416A (en) * | 2015-09-24 | 2015-12-30 | 广东生迪科技有限公司 | Angle-adjustable track lamp |
-
1936
- 1936-07-17 GB GB19804/36A patent/GB477560A/en not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2717954A (en) * | 1950-08-16 | 1955-09-13 | Gen Electric | Elongated roadway luminaire |
US3197629A (en) * | 1963-01-17 | 1965-07-27 | Electrical Products Cons | Aircraft warning lights for towers |
US4933821A (en) * | 1989-05-05 | 1990-06-12 | Minnesota Mining And Manufacturing Company | Reflector edge illuminator for fluorescent light |
EP0413088A1 (en) * | 1989-08-17 | 1991-02-20 | Siemens Aktiengesellschaft | Work lamp |
DE4024738A1 (en) * | 1990-08-03 | 1992-02-06 | Siemens Ag | Indirect reflective luminaire for even illumination of large area - has fluorescent lamp(s) within furrow-shaped auxiliary reflector opposite main reflector |
DE4443741A1 (en) * | 1994-12-08 | 1996-06-13 | Hartmut S Engel | lamp |
DE29519708U1 (en) * | 1995-12-12 | 1997-04-10 | Zumtobel Licht Gmbh, Dornbirn | Luminaire with at least one elongated lamp |
DE19620209A1 (en) * | 1996-05-20 | 1997-11-27 | Zumtobel Licht | Luminaire with a profiled base body as a support for at least one lamp |
EP0898686A1 (en) † | 1996-05-20 | 1999-03-03 | Zumtobel Staff GmbH | Lighting fitting with a basic unit as support for at least one lamp |
US6155693A (en) * | 1996-05-20 | 2000-12-05 | Zumtobel Staff Gmbh | Lighting fitting with a basic unit as support for at least one lamp |
EP0898686B2 (en) † | 1996-05-20 | 2008-02-20 | Zumtobel Lighting GmbH | Lighting fitting with a basic unit as support for at least one lamp |
DE29715568U1 (en) * | 1997-09-01 | 1997-12-11 | Abele & Geiger GmbH, 70188 Stuttgart | Mirror housing for an outdoor lamp |
CN105202416A (en) * | 2015-09-24 | 2015-12-30 | 广东生迪科技有限公司 | Angle-adjustable track lamp |
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