EP3216332A1

EP3216332A1 - Luminaire comprising an led chip

Info

Publication number: EP3216332A1
Application number: EP15822905.4A
Authority: EP
Inventors: Michael Gilbert; Peter Gilbert; Olaf Heinrich KÖNIG
Original assignee: Sls Super Light Solutions Ug (haftungsbeschrankt)
Current assignee: Sls Super Light Solutions Ug (haftungsbeschrankt)
Priority date: 2014-11-07
Filing date: 2015-11-09
Publication date: 2017-09-13
Also published as: WO2016071003A1; US20190368695A1; US10976032B2

Abstract

The invention relates to a luminaire comprising an LED chip as an illuminant, to a device for transporting and replacing an LED chip, and to a set encompassing a luminaire and a device for transporting and replacing an LED chip.

Description

The invention relates to a luminaire which has an LED chip as luminous means, a device for transporting and exchanging an LED chip and a set with a luminaire and a device for transporting and exchanging an LED chip.

LED lights are well known in the art. Even lights that have LED chips as bulbs are known. The problem with these lights according to the prior art is that the LED chips are difficult to remove. This is the current state of the art only by specialized personnel and with the help of a soldering iron implemented. Often, the entire lamp is disposed of after the failure of the lamp or lights, creating unnecessary electronic waste is generated.

The object of the present invention is to improve such known from the prior art lights.

This is achieved by a luminaire according to one of claims 1 to 11 and a device for transport and replacement of an LED chip according to one of claims 12 to 15.

A luminaire which has at least one LED chip as the illuminant is inventively characterized in that the LED chip is replaceable by the chip (non-destructive) is detachably integrated into the lamp. A fixation of the LED chip within the luminaire can be ensured in particular by a positive or non-positive connection. For this purpose, the luminaire is furthermore preferably designed such that a replacement of the LED chip without disassembly of the luminaire is possible.

Under a "light" are different identical or modified lights to understand that are designed with one or more LED chips, such as building lights, street lamps, Stadienfluter, living room washlights, living room lights, business premises floodlights, cinema lights, film, photo or event lights , TV studio lights, car lights and lights to illuminate pool landscapes.

CONFIRMATION COPY By means of the present invention, replacement of the LED chips can be made possible by mechanical connection, in particular in positive or non-positive manner, and simultaneous electronic contacting. In particular, the invention provides that no cohesive integration of the LED chip takes place in the lamp. This can help to minimize waste of resources because a user of a luminaire according to the invention will be able to buy an innovative, energy-friendly and sustainable product. The present invention makes it possible to replace the LED chip in a lamp by simple manipulations. Even the simple change of different shades in the lights is quickly applicable by this simple process. Furthermore, the vulnerable transformers that are used to control the LED chips can also be replaced by simple plug & play, ie a mechanical and electrical plug connection. The change function can be achieved in particular by a plug-in, turn or tilt device. Preferably, it can be provided that the lamp has a removable shaft (in a housing). By such a changeable shaft, a simple insertion of the LED chip into the housing and a simple removal of the LED chip from the housing can be achieved.

Furthermore, advantageously, a ventilation shaft (in a housing of the lamp) may be provided. This can preferably be provided in the plane of the LED chip.

In a preferred embodiment of the lamp according to the invention may further be provided that it has a holder for the LED chip, wherein the holder has a plate with a chip holder and a current collector, in which the LED chip is fixed.

The holder can furthermore preferably be arranged on a tube.

Further preferably, it can be provided that the lamp has a power supply that is interchangeable. A replacement of the power supply may also be possible without disassembly of the lamp particularly preferred. For example, the power supply can be integrated by a connector in the lamp. Such a power supply may in particular comprise a transformer. Furthermore, such a power supply can also include a driver unit, in which a control software for the lamp and / or a processor for implementing the control software are integrated.

The luminaire according to the invention may furthermore preferably have two or more LED chips. Preferably, it can be provided that the or at least one LED chip (ie, its emission direction) is arranged to be adjustable at an angle relative to the luminaire.

In addition, it may be provided that the or at least one LED chip with respect to a lamp plane in the depth, i. with respect to the distance to this lamp plane, is arranged adjustable.

In a preferred embodiment of the lamp according to the invention can also be provided that the LED chips are rotatably mounted. A rotation can be provided in particular about a body axis which is aligned parallel or coaxial with the (middle) emission direction for light of the LED chip.

The invention further relates to a device for transporting and replacing an LED chip, in particular for use with a luminaire according to the invention.

In the device according to the invention may preferably be provided that the LED chip is kept hidden in the device in a closed position of the device.

Furthermore, it can be provided that the LED chip is held open in the device in an open position of the device.

It can also preferably be provided that the LED chip can be separated from the device in a releasing position. The invention further relates to an LED chip for use in a luminaire according to the invention and / or for use with a device according to the invention.

Furthermore, the invention relates to a method for replacing an LED chip of a lamp according to the invention, in particular using a device according to the invention.

The invention will be explained in more detail below with the aid of the drawings with reference to exemplary embodiments. FIG. 1 shows a luminaire according to the invention in a design as a single luminaire in a perspective view (without reflectors and LED chip); FIG.

Fig. 2: the lamp in a front view;

Fig. 3: isolated view of the exchange shaft of the lamp in a plan view; 4 shows an LED chip for use with a lamp in a plan view;

5 shows the LED chip in a side view;

6 shows an isolated view of the chip holder of the luminaire;

7 shows an isolated representation of a current generator of the chip holder;

8 shows a lightkey in a transport position for use with the lamp;

9 shows a greatly simplified side view of the luminaire;

10 shows an illustration of the luminaire according to FIG. 9 with inserted light key in one

Intermediate position;

Fig. 11: the lightkey in the intermediate position;

Fig. 12: a representation of the lamp according to FIG. 9 with installed Lightkey in one

Transfer position;

Fig. 13: the lightkey in the transfer position;

Fig. 14: a longitudinal section through the lightkey;

FIG. 15 shows a plan view of the supply shaft of the luminaire; FIG.

FIG. 16 shows a section through the supply shaft; FIG.

Fig. 17: the plug-in transformer of the lamp in a side view; and

Fig. 18: a lamp according to the invention in a version as a multiple light in one

Front view (without reflectors).

The lamp shown in FIGS. 1 and 2 comprises a housing 1, in particular an aluminum housing. An outer portion of the housing 1 is connected by struts with a cylindrical inner portion. Within the inner portion, one or more pivot bearing elements 2, such as ball bearings, are added. Within the rotary bearing elements 2, a tube 3 (see Fig. 9, 10, 12) is rotatably mounted. Due to the design of the housing 1 with the struts enough free space is formed in the inner region to allow air circulation.

A light source in the form of an LED chip 4 (for example a high-power LED chip, in particular a quantum dot LED chip) is fastened to one end face of the tube 3. For this purpose, a plate is fixed on the tube 3, on which a chip holder 5 (cf., Fig. 6) 6 finds place with current sensors. Power lines for supplying the LED chip 4 with electrical energy run within the tube 3. This is also used for cooling the LED chip 4. By the rotation of the tube 3 with it attached LED chip 4, these can be rotated by up to 360 ° ,

Cooling of the LED chip 4 is primarily carried out by an air flow generated by a fan 7, which is sucked through a supply air shaft 8, which, based on the longitudinal axis of the tube 3, at the same height as the LED chip 4. The emerging from the supply air duct 8 air flow is passed through the LED chip 4 and then derived via an exhaust duct 9. At the distal end of the tube 3 relative to the LED chip 4, a further fan (not shown) is arranged, which also dissipates heat from the LED chip 4. Figs. 4 and 5 show the structure of the LED chip in isolated views. A luminous surface 10 of the LED chip 4 is located on a (metal) base plate 11. This base plate 1 1 is intended as a mounting plate for the LED chip and additionally serves as an electrically conductive connection piece between the luminous area 10 and a power supply for the LED chip 4. In addition, the base plate 1 1 has two connection openings 12, which serve to install the LED chip 4, using a suitable device, a so-called Lightkey 13, in the lamp or to remove it from the lamp.

Fig. 6 shows the chip holder 5 of the lamp in a side view. This comprises a sliding surface element 14, which forms a sliding surface on which the base plate 11 of the LED chip 4 can slide. At two opposite edges of the sliding surface holding elements 15 are connected to the sliding surface element 14, each forming a guide slot with the sliding surface, in which an edge portion of the base plate 1 1 of the LED chip 4 can be performed. A current transmitter 6 also extends along the sides of the sliding surface element 14 on which the holding elements 15 are attached. One of these current generators 6 is shown in an isolated representation in FIG.

Each of the current generator 6 comprises an elongated base body 16 which forms a receiving slot 17 which extends from one of the end faces with decreasing width to near the second end face and on an exposed upper side of the current generator 6, which is approximately on a Height at which the sliding surface of Gleitflächenelements 14 is open. The receiving slot 17 is bounded on both sides by a (bent) current-carrying plate 18. The legs of the current-carrying plate 18 are compressed by means of compression springs 19.

The LED chip 4 is pushed with its base plate 1 1, which is coated with a thermal paste, in the lateral direction below the support members 15 of the chip holder 5. At the same time, current collectors 20 of the LED chip 4, which initially extend from two opposite sides of the base plate 11 or the luminous surface 10 in the lateral direction and are then guided downwards, are introduced from the side into the receiving slot 17 of the respectively associated current generator 6, whereby the LED chip 4 is electrically integrated into the lamp. The base plate of the LED chip 4 can additionally by means of compression springs (not shown) are pressed against the sliding surface of the chip holder 5. Overall, there is a sufficient non-positive fixation of the LED chip 4 in the chip holder. 5 To enable a change of the LED chip 4 of the lamp, this has a removable shaft 21. The exchange shaft 21 is, with respect to the longitudinal axis of the tube 3, arranged at the level of the LED chip 4. On the outside, the changeable shaft 21 can be closed by means of a shaft flap 22 (cf., in particular, FIG. 3). In the closed state, the shaft flap 22 is secured with threaded screws 23. These threaded screws 23 can be turned on, whereby the manhole cover 22 can be opened. When opening a micro-switch 24 is triggered with double NC contact, which interrupts the power in the lamp. Now the exchange shaft 21 is exposed. In the removable shaft 21 of the light key 13 can be introduced. Each replacement LED chip 4 may be located in such a lightkey 3. In a set, an empty lightkey 13 is supplied to a luminaire to allow replacement of the LED chip 4. The Lightkey 13 is used as a transport box as well as for replacing the LED chip 4 in the luminaire. The lightkey 13 (cf., for example, FIG. 8) comprises a housing 25 having a middle part 26 and a first end part 27 and a second end part 28, each of which can be lowered into the middle part 26. By means of compression springs 28, the end portions 27, 28 are acted upon in each case in the extended position. From an inner bottom surface of the second end portion 28 extends a guide support 30, at the end of an LED chip 4 can be held. The LED chip 4 is then located within the limited by the first end portion 27 in the extended position volume. The free end face of the first end part 27 forms a passage opening, which can be closed by means of a closure flap 31.

A releasable fixation of the LED chip 4 on the guide carrier are two retaining hooks 32, which engage in a closed position in the connection openings 12 of the base plate 11 of the LED chip 4 (see Fig .. 14). The retaining hooks 32 are supported in the shape of a rocker and can be pivoted into the closed position or an open position in which they do not engage in the connection openings 12 by means of a mechanical switch 33 integrated in the second end part.

In order to insert an LED chip 4 into the luminaire or to remove an LED chip 4 from the luminaire, the Lightkey 13 is pushed into the removable shaft 21 under pressure. Differently dimensioned and / or positioned guide projections 34 of the lightkey 13, which engage in corresponding guide grooves 35 of the changeable shaft 21 (cf., for example, FIG. 3), ensure that the lightkey 13 can be pushed into the changeable shaft 21 in only one orientation. When inserting the light key 13 into the exchangeable chute 21, first the first end part 27 of the light key 13 moves into the exchangeable chute 21 (see Fig. 10) until it strikes stoppers 36. A further insertion of the middle part 26 of the lightkey 13 into the exchangeable shaft 21 then leads to a countersinking of the first end part 27, as a result of which the LED chip 4 is pushed through the shutter flap 31 which opens. In this case, the LED chip 4 is also passed over a located within the first end portion 27 cartridge 37, in which the thermal paste is located. As a result, the base plate 11 of the LED chip 4 is coated using a scraper 38 with a uniform layer of thermal grease. The LED chip 4 is now exposed, held by the guide support 30 using the retaining hooks 32 (see Figures 10 and 11).

A further insertion of the light key 13 now leads to the second end part 28 being sunk into the central part 26, which likewise abuts against the stoppers 36, whereby the LED chip 4 is brought into a transfer position within the luminaire or the changeable shaft 21 (cf. Figs. 12 and 13). In this case, the LED chip 4 is secured with its base plate 11 in the manner described between the Gleitflächenelement 14 and the support members 15 of the chip holder 5 and electrically integrated by means of the Stromgeberblechen 18 contacting pantograph 20 in the lamp. By means of the mechanical switch 33, the LED chip 4 can then be released from the light key 13.

When the lightkey 13 is relieved of load, it moves back into its transport position according to FIG. 8 and at the same time partially out of the interchangeable shaft 21 due to the application of the pretensioned compression springs 29 without an LED chip 4. After an LED chip 4 has been inserted into the luminaire, the shaft flap 22 can be closed and the threaded screws 23 can be screwed into the receptacle points 39 provided for this purpose. Due to the restored closed position of the hoistway flap 22, a release is signaled to the microswitch 24 and the current flow is restored.

Instead of a mechanically or manually operated light key 13, this can also be formed at least partially automatically operable. In this case, for example, an electric geared motor with gears and spindles can replace mechanical functions. The luminaire according to the invention also makes it possible to simply exchange an associated plug-in transformer 40 accommodated inside the housing 1 (compare FIG. 17). For this purpose, a supply shaft 41 (cf., FIGS. 15 and 16) is provided inside the housing 1. Therein are terminals 42 for the supply of the current of the output voltage and secondary output voltage consumers firmly anchored. At this, the plug-in transformer 40 can be connected by means of corresponding terminals 43. For this purpose, the plug-in transformer 40 can be manually inserted into the supply shaft 41. A recessed grip 44 can be used as a handle when inserting the plug-in transformer 40. By forming differently positioned and / or dimensioned guide grooves 45 in the two side walls of plug-in transformer 40, engage in the corresponding guide projections 46 of the wall of the supply shaft 41, it can be ensured that the plug-in transformer 40 in only one orientation in the supply shaft 41 can be inserted ,

According to FIG. 16, the housing opening of the supply shaft 41 can be closed by means of a shaft flap 47 (compare FIG. 16). The shaft flap 47 can be fixed, for example by means of a screw 48 in the closed position. A sealing element 49 can prevent or limit the penetration of moisture and other contamination. For ventilation of plug-in transformer 40, (fin) inlet openings 50 can be provided in the shaft flap 47. A cooling air flow generated by means of a fan (not shown) can enter the supply shaft 41 through the inlet openings 50, flow around and / or flow through the plug-in transformer 40 and exit via the (lamella) outlet openings 51 again from the housing 1 of the luminaire. Passage openings 52 in the end wall 53 receiving the 42 connections and delimiting the supply shaft 41 ensure guidance of the cooling air flow up to the outlet openings 51. A partition wall 54 deflects the cooling air flow that has flowed through the passage openings 52 in the direction of the outlet openings 51. Through a cable opening 55 in the partition 54 electrical conductors (not shown), the terminals 42 in the end wall 53 of the supply shaft 41 (and possibly a between the end wall 53 and the partition 54 arranged, not shown driver unit) with a (with respect the end wall 53) on the other side of the partition wall 54 arranged control unit (not shown) electrically connect, are guided.

FIG. 18 shows a second embodiment of a luminaire according to the invention. This differs from the lamp according to FIGS. 1 and 2 essentially exclusively by a configuration as a multiple and concrete 4-lamp. This therefore comprises four LED chips 4, which are each mounted on a tube 3. In the tubes 3, not only the power lines for supplying the LED chips 4 are laid with electrical energy, but these also each serve as a main component of the cooling of the LED chips 4. On each tube 3, a plate is fixed on which a chip holder 5 with current sensors 6 as shown in FIGS. 4 to 7 find their place. Since LED chips 4 by their design can only have a beam angle of 120 °, they can be mounted at an angle to the lamp plane in order to influence this physically predetermined radiation angle. Each individual tube 3 is mounted in a first rotary bearing element 2, for example ball bearings, so that the tubes 3 and thereby the LED chips 4 can be rotated by up to 360 °. Depending on the design, the four LED chips 4 are at an angle of 0 to 90 °. As a result, the emission angle can be increased by a multiple. The tubes 3 can still be influenced in such a way that the focus can be changed. For this purpose, the tubes 3 can be reciprocated individually as well as together in the depth to the lamp plane to obtain a common focus or a soft light. This overall arrangement is now again in a second pivot bearing element 56, in particular ball bearings, stored in order to meet by the possibility of individual rotations and by means of integrated reflectors a higher standard of light individuality.

The second pivot bearing element 56 also serves to ensure easy replacement of the individual LED chips 4 via a single changeable shaft 21, even in the multiple light. For this purpose, the corresponding one of the four tubes 4, on which the LED chip 4 to be replaced is arranged, is brought into a change shaft 21 adjacent to the change position. The second pivot member 56 has four grid points, so for each LED chip 4 a matching change position to ensure easy replacement. The replacement of the LED chips 4 takes place via the exchangeable chute 21 integrated in the housing 1 (for example milled-in). This changeable chute 21 is arranged at the same angle in which the LED chips 4 are also aligned. After the LED chips 4 have been replaced as desired gradually, the position of the LED chips 4 is again moved out of the (last) change position and the normal use of the lamp can be continued.

The entire construct is held by the housing 1, in particular in an embodiment as an aluminum housing. The housing 1 is not completely filled, but by a targeted bracing sufficient strength is achieved. The housing 1 allows at the same time to maintain sufficient space indoors to allow air circulation. This air circulation is used to cool the LED chips 4 and is accomplished specifically by the intake of outside air through a supply air shaft 8. This supply air duct leads in a front region in front of the LED chips 4 through the housing, so that the air flow is guided via the LED chips 4. The air flow is sucked by a fan 7, which is located next to the LED chips 4, and discharged via an exhaust duct 9. At the end of each tube 3, a further fan (not shown) is arranged, which dissipates the heat generated by the LED chips 4 and collected with the exhaust air collected in the front region in a lower region of the housing 1 derived.

LIST OF REFERENCES:

1 housing

2 (first) rotary bearing element

3 pipe

4 LED chip

5 chip holder

6 current generator

7 fans

8 supply air shaft

9 exhaust duct

10 illuminated area

1 1 base plate

12 connection opening

13 Lightkey

14 sliding surface element

15 holding element

16 Basic body of the current generator

17 Recording slot of the current transmitter

18 Current sensor plate

19 Pressure spring of the current transmitter

20 current collector of the LED chip

21 exchangeable shaft

22 Shaft flap of the interchangeable shaft

23 threaded screws of the interchangeable shaft

24 microswitches

25 housing of the lightkey

26 Middle part of the housing of the Lightkey

27 first end part of the housing of the lightkey

28 second end part of the housing of the Lightkey

29 Pressure spring of the lightkey

30 leaders

31 Lid of the Lightkey

32 retaining hooks of the lightkey

33 Lightkey switch

34 Guide projection of the lightkey

35 guide groove of the interchangeable shaft

36 stoppers in the changeable shaft 37 Cartridge of the Lightkey

38 Scraper of the Lightkey

39 pick-up points of the interchangeable shaft

40 plug-in transformer

41 supply shaft

42 connections of the supply shaft

43 connections of the plug-in transformer

44 recessed grip

45 guide groove of the plug-in transformer

46 Guide projection of the supply shaft

47 shaft flap

48 Screw connection of the shaft flap

49 sealing element of the supply shaft

50 inlet opening of the supply shaft

51 outlet opening of the supply shaft

52 passage opening of the supply shaft

53 Front wall of the supply shaft

54 Partition wall of the supply shaft

55 Cable opening of the supply shaft

56 Second rotary bearing element

Claims

claims:

1. luminaire having an LED chip (4) as a light source, characterized in that the LED chip (4) is replaceable.

2. Lamp according to claim 1, characterized in that the change takes place by plugging, tilting or turning.

3. Lamp according to claim 1 or claim 2, characterized in that it comprises a removable shaft (21).

4. Lamp according to one of claims 1 to 3, characterized in that it comprises a ventilation shaft (8, 9) in the plane of the LED chip (4).

5. Lamp according to one of the preceding claims, characterized in that it comprises a holder for the LED chip (4), wherein the holder has a plate with a chip holder (5) and a current generator (6), in which the LED Chip (4) is fixed.

6. Lamp according to claim 5, characterized in that the holder is arranged on a tube (3).

7. Lamp according to one of the preceding claims, characterized in that a power supply is replaceable.

8. Lamp according to one of the preceding claims, characterized in that it comprises two or more LED chips (4).

9. Lamp according to one of the preceding claims, characterized in that the / a LED chip (4) is arranged to be adjustable to the lamp at an angle.

10. Lamp according to one of the preceding claims, characterized in that the / a LED chip (4) is arranged adjustable with respect to a lamp plane in depth.

1 1. Lamp according to one of claims 8 to 10, characterized in that the LED chips (4) are rotatably mounted.

12. Device (13) for transport and replacement of an LED chip (4), in particular for use with a lamp according to one of claims 1 to 11.

13. Device (13) according to claim 12, characterized in that the LED chip (4) is kept hidden in a closed position in the device.

14. Device (13) according to claim 12 or 13, characterized in that the LED chip (4) is held open in the device in an open position.

15. Device (13) according to any one of claims 11 to 14, characterized in that the LED chip (4) is separable in a releasing position of the device.