WO2011009151A1

WO2011009151A1 - Lighting means having an led

Info

Publication number: WO2011009151A1
Application number: PCT/AT2010/000269
Authority: WO
Inventors: Wolfgang Flatz; Christoph Platzer; Christian Derkits
Original assignee: Tridonic Gmbh & Co Kg; Ledon Lighting Jennersdorfgmbh
Priority date: 2009-07-22
Filing date: 2010-07-22
Publication date: 2011-01-27
Also published as: DE112010003029A5

Abstract

The solution of the invention relates to a lighting means comprising at least two light-emitting diodes (1, 2), a carrier element (5), on which the light-emitting diodes are arranged, and a housing having a lower housing part (3), wherein the lower housing part comprises a profile element, in particular an extruded profile, wherein the lower housing part has at least one lateral extension (10), which acts as a glare reducer for the lighting means.

Description

Light with LED

The invention relates to a lamp with

Light-emitting diodes according to the preamble of patent claim 1.

Technical area

Such illuminants are used in lighting systems in order to illuminate a large area of rooms,

To reach shelves or refrigerators.

Usually, the bulbs of

Controlled control gear and activated as needed.

For such lighting will be

Gas discharge lamps or light emitting diodes (LED) as

Light source used.

Background Art Instead of gas discharge lamps and incandescent lamps, light emitting diodes are increasingly being used as the light source for illumination. The efficiency and luminous efficacy of light-emitting diodes is being increased more and more so that they are already being used in various general lighting applications. However, they are

Light-emitting diodes point light sources and emit highly concentrated light. In general lighting, such as office space, or the lighting of shelves or refrigerators, however, the user requires the widest possible and uniform illumination. Today's bulbs with light emitting diodes as a light source therefore try using a so-called

Secondary optics, i. a lens or diffuser, which is mounted over one or more light-emitting diodes, to achieve the widest possible light emission.

However, such a secondary optics has the disadvantage that a part of the light emission of the light emitting diode is directed to the viewer.

Presentation of the invention

It is the object of the invention to provide a luminous means which the uniform illumination of a surface by a light emitting diode with light emitting diodes without an aperture and without the above

Disadvantages or under a significant reduction of these disadvantages allows.

This object is achieved according to the invention for a generic device by the characterizing features of claim 1. Particularly advantageous

Embodiments of the invention are described in the subclaims.

The solution according to the invention relates to a luminous means having at least two light emitting diodes, a carrier element on which the light emitting diodes are arranged, a housing having a housing lower part, wherein the housing lower part consists of a profile element, in particular a

Extruded profile, consists, wherein the lower housing part has at least one lateral extension, which acts as a glare for the lamp. In this way it is possible to achieve a very uniform illumination of a surface by a light source with light-emitting diodes.

Description of the preferred embodiments

The invention will be explained in more detail with reference to the accompanying drawings. Show it:

FIGS. 1 to 4 show a first embodiment of a luminous means according to the invention

The invention is based on a

Embodiment of a light bulb with

LEDs explained.

1 shows an embodiment of the luminous means A according to the invention.

Fig. 2 shows a further embodiment of the

Housing bottom part 3 of the inventive lamp A.

Fig. 3 shows a further embodiment of the

Housing bottom part 3 of the inventive lamp A. Fig. 4 shows a plan view of the lower housing part 3 with fastening tabs 8 at both ends

5 to 7 show further embodiments of the

Housing bottom part 3 of the illuminant A according to the invention

8 shows an example of an application of the luminous means A according to the invention

FIG. 1 shows a luminous means A with at least two light-emitting diodes 1, 2. The light-emitting diodes 1, 2 are arranged on a carrier element 5. Since Fig. 1 a

Frontal view of the elongated invention

Illuminant A shows, only a light-emitting diode 1 is seen in this view. Instead of a light-emitting diode 1 but also several close together

placed light emitting diodes form a point of light. It is also possible different colored LEDs

to arrange next to each other. The carrier element 5 is arranged on a housing with a housing lower part 3. The lower housing part 3 consists of a profile element 3, in particular an extruded profile. The

Housing base 3 has at least one lateral

Extension 10 on, as a glare for the

Illuminant A acts. The lower housing part 3 has an elongated shape, and the illuminant A has an elongated shape. The housing base 3 and the lateral extension 10 are opaque, that is, they prevent radiation of light through them. The lower housing part 3 may be formed in one piece or in two pieces. Preferably, as light-emitting diodes 1, 2 white

Light-emitting diodes, for example. Used in the form of dye-converted LEDs or a combination of RGB LEDs.

The housing may further comprise an upper housing part 4, which indirectly or directly on the

Housing base 3 is attached. The upper housing part 4 preferably consists of one substantially

translucent plastic material. The

Housing top 4 may be mounted as a common lens and / or cover over the light emitting diodes 1,2. On the LEDs 1,2 but also each have their own lens can be arranged, which can serve as a cover and thus to protect the light emitting diodes 1,2 at the same time.

When the LEDs 1.2 using COB technology

(Chip-on-board) can be populated, then the

Light emitting diodes 1.2 each by a so-called

Globetop, which forms the lens. However, the light-emitting diodes 1, 2 can also be implemented, for example, by means of SMD technology on the carrier element 5

be attached. The upper housing part 4 or the lens respectively arranged above the light-emitting diodes 1, 2 thus forms a secondary optic, which contributes to the light guidance and thus to the alignment of the light emission 6. It is also possible that both each

individual light-emitting diode 1,2 is covered by a lens in each case and in addition an upper housing part 4 is provided to both optimum light emission (by the juxtaposition of secondary optics) as also to ensure a mechanical protection for the light-emitting diodes 1,2.

The glare for the illuminant A can be achieved, that the illuminant A to

illuminating objects illuminates and the viewer 9 on the light source A over the considered objects to be illuminated, wherein the lower housing part 3 has at least one lateral extension 10, which direct light emission through the light-emitting diodes 1,2 or the upper housing part 4 to the viewer

prevented. By the lower housing part 3 has at least one lateral extension 10, so is a bundled light emission only in one

Main emission direction achieved while a lateral radiation, which from the emission of the

Deviates main radiation, is avoided. The lateral extension 10 can also

have reflective properties, so that the proportion of light emitted by the light emitting diodes 1, 2, which strikes the lateral extension 10, at least partially reflected again, and thus the

Radiation is amplified in the main emission direction.

The luminous means A can be constructed so that the lower housing part 3 has a lateral extension 10 on both sides, which extends laterally to the emission direction of the luminous means A and acts as a glare reduction for the luminous means A. The housing lower part 3 can notches for

Have cling. The lower housing part 3 may additionally or alternatively have devices (slot 11 or bore) for attachment. For example, the devices for fastening as

Fixing tabs 8 be executed, as shown in Fig. 4.

The lower housing part 3 may be made of a heat-dissipating material, for example as aluminum, and thus serve as a heat sink for the LEDs 1, 2. The lower housing part 3 serves as a mechanical base of the lighting means A. On the support element 5, the electrical

Supply lines for the light emitting diodes 1,2 may be applied. In the support member 5, at least a part of the drive electronics for the light emitting diodes 1,2 may be integrated. But it can also be on the support element 5 parts of the control electronics for the LEDs 1.2

be arranged.

Examples of different housing parts 3 are shown in FIGS. 2 to 7. In these examples, the lower housing parts 3 each have a lateral extension 10 on both sides.

As shown by way of example in FIGS. 5 and 6, the lateral extensions 10 in FIG

be arranged laterally on the lower housing part 3 different angles. By choosing two different angles for the arrangement of the two lateral extensions 10, it is also possible to mount the illuminant A in or on one edge. In addition, so will the

Possibility offered, different angles of radiation through the illuminant A in comparison to the use of inventive lower parts 3 with lateral

Extensions 10 in an equiangular arrangement (ie symmetrical angle for both lateral

Extensions 10).

Fig. 4 shows a plan view of the lower housing part 3 with fastening tabs 8 at both ends, in which case additionally the light-emitting diodes 1 and 2 are shown, which are mounted on the carrier element 5. The

Carrier element 5 is in turn attached to the lower housing part 3. The support member 5 may for example by means of an adhesive bond or a

However, it is also possible to fasten the carrier element 5 by means of a clamping connection to the housing lower part 3.

In Fig. 8 is an example of a

Shelf lighting when using a light bulb according to the invention A shown with LEDs. The

Illuminant A is arranged on the shelf 7 such that the light emitted by the illuminant A illuminates the shelves. The glare for the illuminant A is achieved in that the illuminant A illuminates the objects to be illuminated (shown on the

Light emission 6) and the viewer on the

Bulb A can look over the objects to be illuminated, wherein the lower housing part 3 by the at least one lateral extension 10 prevents direct light emission through the light emitting diodes 1,2 or secondary optics such as a housing top 4 on the viewer. The light emission 6 is thus directed only in one direction from the light source A, and thus forms the

Main radiation direction of the illuminant A. The objects to be illuminated are in the individual

Shelves of the shelf 7 placed.

Due to the elongated shape of the invention

Illuminant A and the glare due to the existing lateral extension 10, the

Illuminant A is a surface light for a

illuminate predetermined area in approximately the length of the illuminant A, wherein the height of the surface is determined by the arrangement and the angle of the lateral extension 10.

Thus, for example, a shelf lighting with at least one luminous means A according to the invention or even an exhibition lighting with at least one luminous means A according to the invention can be made possible. Thus, however, a refrigerator lighting with at least one luminous means A according to the invention can be made possible. List of Figures

A bulb

I ₁ 2 LEDs

3 housing base

4 housing upper part

5 carrier element

6 light emission

7 shelf

8 fastening straps

9 viewer

10 lateral extension

11 slot

12 hole

Claims

Claims :

1. Lamp (A) with

at least two light-emitting diodes (1, 2),

- A support element (5) on which the

Light emitting diodes (1,2) are arranged,

- A housing with a housing lower part (3) wherein the housing lower part (3) consists of a profile element, in particular a

Extruded profile, consists,

characterized in that the

Housing lower part (3) has at least one lateral extension (10), which acts as a glare for the lighting means (A).

2. Lamp (A) according to claim 1,

characterized,

in that the glare reduction for the illuminant (A) is achieved in that the illuminant (A) illuminates the objects to be illuminated and the

Viewed viewer (9) on the light bulb over the objects to be illuminated, wherein the lower housing part (3) by the at least one lateral extension (10) direct light emission through the light emitting diodes (1,2) or the housing top (4) on the viewer ( 9) prevented.

3. Lamp (A) according to claim 1 or 2, characterized in that

the lower housing part (3) has on both sides a lateral extension (10) which extends laterally in each case to the emission direction of the luminous means (A) and as

Glare for the bulb (A) acts.

4. illuminant (A) according to any one of claims 1 to 3,

characterized,

that the lower housing part (3) notches for

Clinging.

5. Lamp (A) according to one of claims 1 to

4,

characterized,

that the lower housing part (3) devices

(Slot or bore) has to be fastened.

6. Lamp (A) according to any one of claims 1 to

5,

comprising an upper housing part (4) which directly or indirectly on the

Housing base (3) is attached,

wherein the upper housing part (4) consists of a substantially translucent

Plastic material exists.

7. illuminant (A) according to any one of claims 1 to 6,

characterized,

in that on the carrier element (5) the electrical supply lines for the light-emitting diodes (1, 2)

are applied.

8. illuminant (A) according to claim 7,

characterized,

that in the carrier element (5) at least part of the drive electronics for the light emitting diodes (1,2) is integrated.

9. illuminant (A) according to any one of claims 1 to 8,

characterized,

in that the upper housing part (4) is mounted as a common lens and / or cover over the light-emitting diodes (1, 2).

10. refrigerator lighting comprising at least one light source (A) according to one of claims 1 to 9. 11. shelf lighting comprising at least one

Illuminant (A) according to one of claims 1 to 9.

12.Exhibition illumination comprising at least one light source (A) according to one of claims 1 to

9th