DE3876731T2 - LIGHT HOUSING. - Google Patents
LIGHT HOUSING.Info
- Publication number
- DE3876731T2 DE3876731T2 DE8888114485T DE3876731T DE3876731T2 DE 3876731 T2 DE3876731 T2 DE 3876731T2 DE 8888114485 T DE8888114485 T DE 8888114485T DE 3876731 T DE3876731 T DE 3876731T DE 3876731 T2 DE3876731 T2 DE 3876731T2
- Authority
- DE
- Germany
- Prior art keywords
- lighting fixture
- cross
- section
- lens
- light housing
- 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 - Fee Related
Links
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000004431 polycarbonate resin Substances 0.000 claims description 2
- 229920005668 polycarbonate resin Polymers 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims 1
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 claims 1
- 239000004416 thermosoftening plastic Substances 0.000 claims 1
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004425 Makrolon Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F21V15/00—Protecting lighting devices from damage
- F21V15/01—Housings, e.g. material or assembling of housing parts
- F21V15/013—Housings, e.g. material or assembling of housing parts the housing being an extrusion
-
- 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
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
-
- 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
- F21V27/00—Cable-stowing arrangements structurally associated with lighting devices, e.g. reels
-
- 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)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Die vorliegende Erfindung ist auf ein Leuchtengehäuse gerichtet, insbesondere auf ein Leuchtengehäuse, das aus einem thermoplastischen Harz hergestellt ist.The present invention is directed to a lamp housing, in particular, to a lamp housing made of a thermoplastic resin.
Beleuchtungshalterungen mit einem Gehäuse - einem Leuchtengehäuse - für fluoreszierende Leuchtröhren finden weit verbreitete Anwendung. Sie werden normalerweise an der Decke befestigt oder aufgehängt und sind aus Metallblech gefertigt. Versuche, sie aus thermoplastischen Materialien herzustellen, waren bislang nicht erfolgreich, da das Gewicht der Haltevorrichtung und der Röhren unannehmbare Biegespannungen auf das Leuchtengehäuse ausübt, was sowohl die Installierung als auch den Betrieb schwierig macht. Man hat Änderungen des Baumusters in Betracht gezogen, deren Ergebnis Leuchtgehäuse waren, die nur schwierig und zu teuer herzustellen sind.Lighting fixtures with a housing - a luminaire housing - for fluorescent tubes are in widespread use. They are usually ceiling-mounted or suspended and are made of sheet metal. Attempts to make them from thermoplastic materials have not been successful because the weight of the fixture and tubes imposes unacceptable bending stresses on the luminaire housing, making both installation and operation difficult. Design changes have been considered, resulting in luminaire housings that are difficult and expensive to manufacture.
Die Beleuchtungshalterung der Erfindung umfaßt einen langgestreckten Formkörper mit einem linsenförinigen Querschnitt. Der linsenförmige Querschnitt verleiht dem Leuchtengehäuse einen hohen Grad der Steifigkeit und Verwindungsfestigkeit. Die Haltevorrichtung kann vorzugsweise durch Extrusion eines geeigneten thermoplastischen Harzes hergestellt und vorzugsweise mit geeigneten Endkappen versehen werden. In einer bevorzugten Ausführungsform werden elektrische Leitungen in das extrudierte Teil eingebettet.The lighting fixture of the invention comprises an elongated molded body with a lens-shaped cross-section. The lens-shaped cross-section provides the lighting housing with a high degree of rigidity and torsional strength. The fixture can preferably be made by extrusion of a suitable thermoplastic resin and preferably provided with suitable end caps. In a preferred embodiment, electrical leads are embedded in the extruded part.
Die Beleuchtungshalterung der vorliegenden Erfindung ist ein thermoplastisch geformter langgestreckter Gegenstand, dessen Querschnitt - über seine gesamte Abmessung in Längsrichtung - einen linsenförmigen - lentikularen - Teil umfaßt. Mit anderen Worten, der lange Gegenstand umfaßt eine verstärkende, parallel zu seiner Längsrichtung verlaufende hohle Rippe, die einen senkrecht zu der Hauptachse des langgestreckten Gegenstandes angeordneten lentikularen Querschnitt hat.The lighting fixture of the present invention is a thermoplastically molded elongate article whose cross-section - over its entire longitudinal dimension - includes a lens-shaped - lenticular - portion. In other words, the elongate article includes a reinforcing hollow rib running parallel to its longitudinal direction and having a lenticular cross-section arranged perpendicular to the major axis of the elongate article.
Die Erfindung wird am besten unter Bezugnahme auf die Zeichnungen beschrieben.The invention is best described with reference to the drawings.
In Figur 1 ist der Querschnitt des erfindungsgemäßen Leuchtengehäuses dargestellt. Der linsenförmige Schnitt des Leuchtengehäuses wird durch Verbinden der gekrümmten Teile 1 und 2 hergestellt. Die Ränder 3 und 4 bilden eine Reflektorfläche, deren Größe für die Erfindung nicht kritisch ist.Figure 1 shows the cross section of the lamp housing according to the invention. The lens-shaped section of the lamp housing is produced by connecting the curved parts 1 and 2. The edges 3 and 4 form a reflector surface, the size of which is not critical for the invention.
Der eine Teil des Profils wird zweckmäßigerweise mit dem zweiten coextrudiert, und beide werden in der Schmelze miteinander verbunden. Elektrische Drähte 5 können vor dem Verbinden in das Harz eingebettet werden, um eine elektrische Verbindung mit den Endkappen-Anschlüssen bereitzustellen. Alternativ können Drähte in Längsrichtung durch den linsenförmigen Hohlraum hindurchgeführt werden, nachdem die Einheit extrudiert worden ist.One part of the profile is conveniently co-extruded with the second and the two are melt bonded together. Electrical wires 5 may be embedded in the resin prior to bonding to provide electrical connection to the end cap terminals. Alternatively, wires may be passed lengthwise through the lens-shaped cavity after the unit has been extruded.
Wenngleich der Artikel der Erfindung am einfachsten durch Extrusion hergestellt wird, kann er auch durch Spritzgießen hergestellt werden. Durch Spritzguß geformte Teile, die 1 und 2 in Figur 2 entsprechen, können erzeugt und dann mittels irgendeiner aus einer Anzahl von Methoden, die in der Technik bekannt sind, verbunden werden, vorzugsweise durch Ultraschall-Schweißen. Der Spritzguß kann mit Vorteil zur Herstellung von erfindungsgemäßen Beleuchtungshalterungen eingesetzt werden, die weitere komplexe geometrische Formen umfassen, d.h. Endkappen.Although the article of the invention is most easily manufactured by extrusion, it may also be manufactured by injection molding. Injection molded parts corresponding to 1 and 2 in Figure 2 may be produced and then joined by any of a number of methods known in the art, preferably by ultrasonic welding. Injection molding may be used to advantage to manufacture lighting fixtures according to the invention which include further complex geometric shapes, i.e. end caps.
Von den thermoplastischen Harzen, die für die Herstellung des langgestreckten Gegenstandes der Erfindung geeignet sind, wird ein Polycarbonat-Harz wie Makrolon (von Mobay Corporation) bevorzugt.Of the thermoplastic resins suitable for making the elongated article of the invention, a polycarbonate resin such as Makrolon (from Mobay Corporation) is preferred.
In einer bevorzugten Ausführungsform stimmt der linsenförmige Querschnitt des langgestreckten Gegenstandes mit der in dem US-Patent 4 621 940 offenbarten Form überein. Es wurde gefunden, daß diese Konstruktion einen hohen Grad der Biegefestigkeit bietet und trotzdem solches Biegen und wiederholte Spannungsbeanspruchungen ohne einen Bruch ermöglicht.In a preferred embodiment, the lenticular cross-section of the elongated article conforms to the shape disclosed in U.S. Patent 4,621,940. This construction has been found to provide a high degree of flexural strength while still allowing such bending and repeated stress loading without failure.
Die beiden den Linsenteil des Querschnitts des langgestreckten Gegenstandes begrenzenden Wände können auf jede beliebige Weise miteinander verbunden werden, die beim Biegen oder Ablenken des Artikels gegen seine Hauptachse in der Ebene seiner Nebenachse die Spannung im wesentlichen gleichmäßig überträgt.The two walls defining the lens portion of the cross-section of the elongate article may be connected together in any manner which, when the article is bent or deflected against its major axis, transfers the stress substantially uniformly in the plane of its minor axis.
In einer besonders bevorzugten Technik wird der langestreckte Gegenstand als einstückige Form extrudiert. Der Linsen- Teil wird ohne die Bildung und das Verbinden zweier getrennter Stücke hergestellt.In a particularly preferred technique, the elongated article is extruded as a single piece. The lens portion is manufactured without the formation and joining of two separate pieces.
Wenngleich die Erfindung im vorstehenden ausführlich zum Zweck der Erläuterung beschrieben ist, sei ausdrücklich bemerkt, daß solche Einzelheiten nur diesem Zweck dienen und daß der Fachmann Abänderungen vornehmen kann, ohne dadurch vom Umfang der Ansprüche abzuweichen.Although the invention has been described in detail above for the purpose of illustration, it is to be expressly understood that such details are for that purpose only and that modifications may be made by those skilled in the art without departing from the scope of the claims.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9811387A | 1987-09-17 | 1987-09-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3876731D1 DE3876731D1 (en) | 1993-01-28 |
| DE3876731T2 true DE3876731T2 (en) | 1993-04-22 |
Family
ID=22267222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8888114485T Expired - Fee Related DE3876731T2 (en) | 1987-09-17 | 1988-09-05 | LIGHT HOUSING. |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0307758B1 (en) |
| DE (1) | DE3876731T2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3911900A1 (en) * | 1989-04-12 | 1990-10-18 | Stahl R Schaltgeraete Gmbh | EXPLOSION PROTECTED LAMP |
| GB8917055D0 (en) * | 1989-07-26 | 1989-09-13 | Light Years Ahead Ltd | Space lighting fitting |
| NL1000207C2 (en) * | 1995-04-24 | 1996-10-25 | Spaanderman Im En Export B V | Trough-type lighting fixture. |
| FR2859739B1 (en) * | 2003-09-11 | 2005-11-11 | Pascal Lucchina | MOBILE ARM, IN PARTICULAR FOR ROAD OR MOTORWAY USE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3121577A1 (en) * | 1981-05-30 | 1982-12-23 | Achim 5451 Oberhonnefeld Wodrich | Aquarium luminaire |
| US4621940A (en) * | 1984-09-20 | 1986-11-11 | Mobay Chemical Corporation | Stiff but bendable elongated plastic article |
-
1988
- 1988-09-05 DE DE8888114485T patent/DE3876731T2/en not_active Expired - Fee Related
- 1988-09-05 EP EP88114485A patent/EP0307758B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0307758A2 (en) | 1989-03-22 |
| EP0307758A3 (en) | 1990-03-14 |
| EP0307758B1 (en) | 1992-12-16 |
| DE3876731D1 (en) | 1993-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |