DE1299262B - Luminaire and method of manufacturing the same - Google Patents
Luminaire and method of manufacturing the sameInfo
- Publication number
- DE1299262B DE1299262B DEP1772177.6A DE1772177A DE1299262B DE 1299262 B DE1299262 B DE 1299262B DE 1772177 A DE1772177 A DE 1772177A DE 1299262 B DE1299262 B DE 1299262B
- Authority
- DE
- Germany
- Prior art keywords
- projections
- light source
- tubular lampshade
- lampshade
- threaded mandrel
- 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.)
- Pending
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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
-
- 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
- F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
- F21V1/14—Covers for frames; Frameless shades
- F21V1/16—Covers for frames; Frameless shades characterised by the material
- F21V1/22—Covers for frames; Frameless shades characterised by the material the material being plastics
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
-
- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Die vorliegende Erfindung betrifft eine Leuchte, bei welcher eine Lichtquelle am einen Ende eines röhrenartigen Leuchtenschinns angeordnet ist, der mit inneren, ringförmigen, in solchem Abstand voneinander angeordneten Vorsprüngen versehen ist, daß Lichtstrahlen von der Lichtquelle nur die gegen die Lichtquelle gekehrten Flächen der Vorsprünge treffen.The present invention relates to a lamp in which a light source at one end of a tubular lampshade is arranged, with inner, ring-shaped, at such a distance from each other arranged projections is provided that light rays from the light source only against the Light source swept surfaces of the projections hit.
Dadurch wird Reflexion an den Wänden des Leuchtenschirms vermieden, und eine Person, die die Lichtquelle nicht sehen kann, hat nur den Eindruck von indirekter Beleuchtung.This avoids reflection on the walls of the lampshade, and a person who does the The light source cannot see, only has the impression of indirect lighting.
Bei den bisher bekannten Leuchtenschirmen sind die ringförmigen Vorsprünge entweder in der Form von konzentrischen Ringen angeordnet, oder man hat im fertigen Leuchtenschirm auf einer Drehbank eine Anzahl von Rillen eingedreht, wodurch eine Reihe von Arbeitsgängen notwendig gewesen ist mit dem Ergebnis, daß solche Armaturen verhältnismäßig teuer waren.In the previously known lampshades, the annular projections are either in the form arranged by concentric rings, or you have one in the finished lampshade on a lathe Number of grooves turned in, which has necessitated a number of operations with the Result that such fittings were relatively expensive.
Die Erfindung bezweckt, diesen Nachteil zu beseitigen und einen Leuchtenschirm der erwähnten Art zu schaffen, welcher billig in Massenfertigung hergestellt werden kann.The aim of the invention is to eliminate this disadvantage and to provide a lampshade of the type mentioned Type that can be mass-produced cheaply.
Dies wird erfindungsgemäß dadurch erreicht, daß die Vorsprünge als Gänge eines Innengewindes ausgebildet sind. Zweckmäßig wird der röhrenartige Leuchtenschirm im Spritzgußverfahren in einer Form mit zentralem Gewindedorn hergestellt mit nachfolgendem automatischem Ausschrauben des Gewindedorns. This is achieved according to the invention in that the projections are designed as turns of an internal thread are. The tubular lampshade is expediently injection-molded in a mold Manufactured with a central threaded mandrel with subsequent automatic unscrewing of the threaded mandrel.
Die Erfindung wird im folgenden näher an Hand der Zeichnung eines Ausführungsbeispiels erklärt; es zeigtThe invention is explained in more detail below with reference to the drawing of an exemplary embodiment; it shows
F i g. 1 eine perspektivische Darstellung der Leuchte nach der Erfindung undF i g. 1 shows a perspective view of the lamp according to the invention and
F i g. 2 einen Längsschnitt durch die Leuchte.F i g. 2 shows a longitudinal section through the lamp.
Die gezeigte Leuchte besteht aus einem röhrenförmigen Schirm 10 aus einem für Lichtstrahlen nicht durchlässigen Material, vorzugsweise einem Kunststoff, welcher zur Verarbeitung im Spritzgußverfahren geeignet ist.The lamp shown consists of a tubular Screen 10 made of a material that is not permeable to light rays, preferably a plastic, which is suitable for processing by injection molding.
Der Schirm kann in nicht gezeigter Weise so angebracht werden, daß das eine Ende eine Lichtquelle 12 umgibt. Um Streuung der Lichtstrahlen an der Schirmwand zu vermeiden, so daß die Beleuchtung als indirekt wirkt ohne störende Reflexe, ist die Innenwand des röhrenartigen Schirms nahezu ganz mit einem Gewinde 16 versehen. Der obere Teil der Innenwand hat einen gewindefreien Teil 14.The screen can be attached in a manner not shown so that one end is a light source 12 surrounds. To avoid scattering of the light rays on the screen wall, so that the lighting as an indirect effect without disturbing reflections, the inner wall of the tube-like screen is almost whole provided with a thread 16. The upper part of the inner wall has a thread-free part 14.
Als Beispiel kann zur Erreichung der gewünschten optischen Wirkung die Gewindesteigung etwa 2 mm sein mit einer Gewindetiefe von etwa 0,7 mm bei einem etwa 15 cm langen röhrenartigen Schirm, dessen Durchmesser 13,5 cm beträgt.As an example, the thread pitch can be about 2 mm to achieve the desired optical effect be with a thread depth of about 0.7 mm for a tube-like screen about 15 cm long, its Diameter is 13.5 cm.
Die äußere Mantelfläche des röhrenartigen Leuchtenschirms ist vorzugsweise mit einer Anzahl axial verlaufender Rippen 18 versehen, wodurch der Schirm in der Form während des Ausschraubens des Domes festgehalten ist.The outer circumferential surface of the tubular lampshade is preferably axial with a number extending ribs 18 provided, whereby the screen in the shape during the unscrewing of the Domes is held.
Die Spritzgußform kann inwendig mit einer geringen Konizität ausgebildet sein.The inside of the injection mold can be designed with a slight conicity.
Es ist dadurch leichter möglich, nach dem Spritzgießen durch Axialverschiebung des Gewindedorns den Leuchtenschirm teilweise aus der Form auszuziehen, jedoch nur so weit, daß die Enden der axial verlaufenden Rippen 18 sich noch in der Form befinden, so daß dadurch die Röhre gegen Drehung gesichert ist, bis der Gewindedorn ausgeschraubt ist.This makes it easier to do after injection molding by axially displacing the threaded mandrel pull the lampshade partially out of the mold, but only so far that the ends of the axially extending ribs 18 are still in the mold, thereby preventing the tube from rotating is secured until the threaded mandrel is unscrewed.
Um ein schnelles Ausschrauben zu erreichen, ist das Gewinde des Gewindedorns vorzugsweise mehrgängig. In order to achieve a quick unscrewing, the thread of the threaded mandrel is preferably multi-start.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK224567AA DK113001B (en) | 1967-04-27 | 1967-04-27 | Lighting fixture and method of its manufacture. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1299262B true DE1299262B (en) | 1969-07-17 |
Family
ID=8111045
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE6603677U Expired DE6603677U (en) | 1967-04-27 | 1968-04-10 | LAMP |
DEP1772177.6A Pending DE1299262B (en) | 1967-04-27 | 1968-04-10 | Luminaire and method of manufacturing the same |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE6603677U Expired DE6603677U (en) | 1967-04-27 | 1968-04-10 | LAMP |
Country Status (5)
Country | Link |
---|---|
US (1) | US3596085A (en) |
DE (2) | DE6603677U (en) |
DK (1) | DK113001B (en) |
GB (1) | GB1219686A (en) |
SE (1) | SE329137B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3936669A (en) * | 1974-07-11 | 1976-02-03 | Marton C. Gaston | Beauty swag lamp |
GB2205522A (en) * | 1987-06-09 | 1988-12-14 | Mono Pumps Ltd | Moulding an article having an internal helical gear formation thereon |
JP6886132B1 (en) * | 2018-04-10 | 2021-06-16 | シグニファイ ホールディング ビー ヴィSignify Holding B.V. | Decorative light source shield |
-
1967
- 1967-04-27 DK DK224567AA patent/DK113001B/en unknown
-
1968
- 1968-04-05 GB GB06637/68A patent/GB1219686A/en not_active Expired
- 1968-04-10 DE DE6603677U patent/DE6603677U/en not_active Expired
- 1968-04-10 DE DEP1772177.6A patent/DE1299262B/en active Pending
- 1968-04-16 US US721758A patent/US3596085A/en not_active Expired - Lifetime
- 1968-04-24 SE SE05514/68A patent/SE329137B/xx unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
GB1219686A (en) | 1971-01-20 |
US3596085A (en) | 1971-07-27 |
SE329137B (en) | 1970-10-05 |
DE6603677U (en) | 1969-11-13 |
DK113001B (en) | 1969-02-10 |
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