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(11) | EP 2 292 973 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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High power led street light structure Straßenlaternenstruktur mit Hochleistungs-LED Structure de lampadaire à diodes haute puissance |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
FIELD AND BACKGROUND OF THE INVENTION
[0001] The present invention relates generally to street light structure where LED lights are used to produce lighting, resulting in lesser consumption of electricity and lesser need for maintenance and thus substantial cost-saving.
[0002] Traditionally, street lighting is done by incandescent lighting, halogen lighting, sodium vapor lighting, or fluorescent lighting. Incandescent lighting consumes lot of power and generates substantial heat. Moreover, not enough lighting is produced by this traditional method.
[0003] Halogen lighting, though producing strong lighting effect, also consumes a lot of electricity.
[0004] Fluorescent lighting uses less electricity, but requires a lot more monitoring and maintenance to replace burnout lights.
[0005] Sodium vapor lighting, though consuming less electricity compared to incandescent light, contains mercury in some version and is a source of pollution to the environment.
[0006] High power LED street lights are known from US 2009/116233, WO 2008/070519 and US 2008/316755.
SUMMARY OF PRESENT INVENTION
[0007] Present invention is defined by claim 1. The present disclosure discloses a multi-sided structure, such as a hexagonal structure, that uses a number of low wattage LED light, each is around 0.5 W - 3W, so that they are arranged on the "fan" part of the multi-sided structure, which has an aluminum plate that houses the LED lights, where a layer of water-proofing is situated between the fan part and the aluminum plate.
[0008] A lens is used on the outside surface of said LED lights, so that the lighting effect is focused and adjusted more effectively for lighting purpose.
[0009] LED light is the new trend for general lighting, since it uses roughly 20% of the electricity used to produce equivalent amount of lighting by a high-pressure Sodium light. Besides, LED light is more environmentally friendly because it contains no lead or mercury and thus not create the pollution associated with the two types of metal that are known to be harmful to the environment and to human health.
[0010] The street lighting based upon the LED lights allows working temperature between -20 °C and +65 °C and has a wide range of applicability than other type of lighting, in addition to the save electricity cost.
[0011] Also, the use of aluminum plate provides a light-weight yet heavy-duty structure for long-term use, and thus is good for street lighting purpose.
DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the preferred embodiments of the invention and together with the description, serve to the principles of the invention, but are not to limit the scope of present invention to the extent present invention is applicable.
[0014] Fig. 2 shows the structural cross-sectional view of present LED street light, along the A-A orientation in Fig. 1.
[0015] Fig. 3 shows the exploded view of present LED street light, with components drawn out for numbering identification.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0016] The high power LED street light of present invention primarily consists of a head portion 1, which connected to a head connector 2 to a main chassis 3, which is then attached to a multi-sided body 7 (here in this particular embodiment, it is a hexagonal body, having 6 fan portions), via heat ring 4, as shown in Fig. 1 and Fig. 2.
[0017] A printed circuit board (PCB) 5 is located inside said main chassis 3, to provide the electrical connection to a plurality of LED lights 6 placed on the outside surface of the "fan" on said hexagonal body 7.
[0018] The A-A line in Fig. 1 forms the reference plane for the profile image of the Fig. 2, showing the 6-sided structure of the hexagonal body 7.
[0019] As shown in Fig. 2, on each "fan" portion of said hexagonal body 7, a string of LED lights 6 is placed on an aluminum plate 8. An optical lens 9 is located on the outside surface of each of the LED light 6.
[0020] A layer of washer piece 10 is sandwiched between said aluminum plate 8 and each one of the six "fan" portion of said hexagonal body 7, to provide for a water-proof structure, as exemplified in Fig. 3, which is an exploded view of the components.
[0021] Although the present disclosure uses the example of a hexagonal body, the same principle can be applied to alternative embodiment of high power LED light wherein the string of LED lights can be placed on a four-sided, eight-side, ten-sided or twelve-sidled structure, depending implementation.
A head portion (1);
A head connector (2);
A main chassis (3) containing a printed circuit board (5) inside;
A heat ring (4);
A plurality of LED lights (6);
A multi-sided body (7), where each side forms a fan portion having a fan surface, each fan portion having a washer piece (10), said high power LED street light being characterized in that each fan portion further comprises an aluminum plate (8) upon which said LED lights (6) are located,
and a cover lens (9) located on the outside surface of the LED lights (6),
and in that the washer piece (10) is sandwiched between said fan surface and said aluminum plate (8),
so that said washer piece (10) serves to provide water-proofing function.
einen Kopfabschnitt (1),
einen Kopfverbinder (2),
einen Hauptkörper (3), der im Inneren eine gedruckte Leiterpatte (5) enthält,
einen Wärmering (4),
mehrere LED-Lampen (6),
einen mehrseitigen Körper (7), bei dem jede Seite einen Fächerabschnitt bildet, der eine Fächeroberfläche aufweist, wobei jeder Fächerabschnitt mit einem Dichtungsstück (10) versehen ist, wobei die Hochleistungs-LED-Straßenleuchte dadurch gekennzeichnet ist, dass jeder Fächerabschnitt ferner eine Aluminiumplatte (8) umfasst, auf der sich die LED-Lampen (6) befinden,
und eine Abdecklinse (9), die sich auf der äußeren Oberfläche der LED-Lampen (6) befindet,
und dass das Dichtungsstück (10) zwischen der Fächeroberfläche und der Aluminiumplatte (8) eingefasst ist,
so dass das Dichtungsstück (10) dazu dient, eine Wasserabdichtungsfunktion bereitzustellen.
une partie de tête (1) ;
un connecteur de tête (2) ;
un châssis principal (3) contenant un circuit imprimé (5) à l'intérieur ;
un joint thermique (4) ;
une pluralité de lampes à diode électroluminescente (6) ;
un corps à plusieurs côtés (7), où chaque côté forme une partie en éventail ayant une surface en éventail, chaque partie en éventail ayant une partie de rondelle (10), ladite lampe d'éclairage public à diodes électroluminescentes de grande puissance étant caractérisée en ce que chaque partie en éventail comporte en outre une plaque en aluminium (8) sur laquelle sont disposées lesdites lampes à diode électroluminescente (6),
et une lentille de capot (9) disposée sur la surface extérieure des lampes à diode électroluminescente (6),
et en ce que la partie de rondelle (10) est enserrée entre ladite surface en éventail et ladite plaque en aluminium (8),
de telle sorte que ladite partie de rondelle (10) sert à procurer une fonction d'étanchéité à l'eau.
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.
Patent documents cited in the description