EP2848859B1 - Light emitting device - Google Patents

Description

The invention relates to a light-emitting device, in particular ceiling or wall light, with at least one light and heat emitting lighting unit, in particular an LED unit.

Ceiling lights and wall lights as light emitting devices are known in the art. These usually include a base plate with which they are attached to a room ceiling or space wall, and a dome part which is attached to the base plate. As light emitting elements incandescent lamps, halogen lamps, but also light emitting diodes (LED) can be used. Since the light-emitting elements always radiate heat during operation, the ceiling and wall lights become warm or even hot during operation. The more the light and heat emitting lighting unit heats up, the shorter is its service life. It is therefore desirable here to provide a way to increase the life of the lighting unit.

The EP 1 925 879 A1 discloses a housing for lighting fixtures and a lamp with this. The housing comprises an upper housing part and a lower housing part for receiving a lighting fixture, comprising a light exit window. The upper housing part and the lower housing part are thermally decoupled by an intermediate layer between them, wherein the material of the intermediate layer is thermally less conductive than the material used for the upper housing part and the lower housing part. The housing top and bottom portions form opposing first and second side portions, with a through opening extending from the first side portion to the second side portion. Cooling fins are integrally connected to the lower housing part. Upper housing part, lower housing part and cooling fins are not in direct contact with each other, but the intermediate layer acts as a thermal barrier. The cooling fins lie in a through opening formed by the lower housing part and the upper housing part. In the lower housing part luminous bodies are arranged.

The US 2012/0287613 A1 discloses a lighting unit having a thermally conductive LED field housing and a heat transfer element on the side of a board opposite the arrangement of a control circuit of the LEDs, which forms a heat conduction path between the LED field and the back of the LED field housing. The heat transfer element is made of a thermally conductive material, such as aluminum or a similar material, which has good thermal conductivity.

From the WO 2011/079387 A1 a lighting unit is known which is pivotally mounted on a bracket. The lighting unit includes a thermally conductive LED array housing for an LED array disposed on a first side of a circuit board. A heat dissipating element is disposed on the second side of the board and forms a heat conduction path between the LED array and the back of the LED field housing. On the back of the LED field housing, a housing with an electrical power supply for the lighting unit is arranged. Heat distribution elements on the back side of the LED field housing form convection air circulation paths and thermally isolated gaps between the heat distribution elements and the housing of the electrical power supply.

The WO 2011/077795 A1 discloses an LED light source device in which an LED and a control unit for driving the LED are thermally separated from each other so as not to be thermally affected and thus the LED and the control unit can be efficiently cooled. The LED light source device includes a first housing including an LED substrate, a second housing including the LED control unit, a connector for connecting the first and second housings to each other thermally separated from each other, a first heat dissipation structure on a surface of the first one Housing and the second housing, which are arranged opposite to each other, and a second heat dissipation structure, which is provided spaced from the first heat dissipation structure and disposed on the other surface.

From the WO 2009/029629 A1 is an LED lighting unit is known, which is designed explosion-proof. The lighting unit includes a lighting part, a heat sink connected to the lighting part, a protruding part connected to the lighting part for externally coupling a power supply to the lighting part, and a housing having electrical wiring connected to the protruding part ,

The present invention is therefore based on the object, a light-emitting device, in particular ceiling or wall light, with at least one lighting unit, in particular an LED unit to provide, in which the life of the lighting unit over the prior art can be significantly increased.

The object is achieved for a light-emitting device according to the preamble of claim 1, characterized in that a sealing of moisture or moisture to be protected components of the light-emitting device by engaging the components to be protected receiving housing part takes place in a groove provided in the second part or by intermeshing of the components to be protected receiving housing part with a mating profile of the housing part, which is provided on the second part, or by gripping the outside of the components to be protected receiving housing part by a counter-profile on the second part of the light-emitting device. Further developments of the invention are defined in the dependent claims.

As a result, a light-emitting device, in particular ceiling or wall light, created in which an at least two-part design is provided. Between the at least two parts, a gap is left through which air can pass. Furthermore, a number of air flow around ribs and / or pins and / or pins is provided. Through this, a heat dissipation by convection from the interior of the light-emitting device to the outside is possible. The heat radiated by the illumination unit emitting light and heat during operation can be dissipated to the outside by the air flowing around the ribs or pins or pins from the interior of the light emitting or emitting device, ie away from the at least one heat emitting illumination unit that thereby a cooling of this can be achieved. The air flow around ribs and / or pins advantageously surround the illumination unit on all sides, so that in all directions a heat dissipation from the light-emitting device to the outside, ie in their environment, is possible. An air passage can take place through the gap provided, wherein the air flow around ribs or pins or pins in the airspace generated by leaving the gap between the first and the second part of the light-emitting device protrude or are arranged in this. In the present case, ribs are understood as meaning all types of cantilevered elements which have not only a height but also a clear longitudinal extent transverse to the vertical extent. They may be straight or arbitrarily curved and / or bent and / or formed one or more angled multiple times.

In addition to the heat and light emitting lighting unit receiving the first part, a second part is provided, which is designed as a base part and can be mounted under the ceiling or on the wall of a room. The light and heat emitting lighting unit receiving first part can be hinged and / or releasably connected to the base part or be. By providing an articulated connection between the first and the second part of the light-emitting device, it is possible, for example, to replace the lighting unit that this comprehensive first part of the ceiling or

Turn down the wall or the second part or base part, replace the lighting unit and the first part comprising this again in the attachment of the light-emitting device in the form of a ceiling light up or in the form of a wall light up or down - to the second or Swing base part up. A further connection of the first and second part of the light-emitting device is not required if the joint provides a position fixation in the pivoted-up state of the first part to the second part. However, a fixation of the first part to the second part of the light-emitting device may be provided. The fixation can be carried out in particular via a latching device or another type of fixing device.

The gap between the base part and the light and heat emitting lighting unit comprising part may for example be 10-15 mm. Such a gap width is sufficient to allow a sufficient amount of air into the interior of the light-emitting device and to achieve the desired heat dissipation.

The ribs or pins or pins may be made of metal, in particular die-cast aluminum. Furthermore, these can be mounted on a cooling plate or connected to this to allow even better heat dissipation.

The lighting unit receiving the first part may as well as the second part, the base part, consist of a plastic, wherein the lighting unit receiving part further advantageously a light passage enabling cover, in particular dome-shaped cover comprises. The cover is translucent or transparent, e.g. opaque.

The at least one lighting unit can be arranged on the cooling plate on which the ribs or pins or pins are arranged, or on a further cooling plate. In particular, the at least one lighting unit is arranged on the underside of the cooling plate, while the ribs or pins or pins are arranged on its upper side. Further For example, the at least one lighting unit may comprise light-emitting diodes arranged on at least one printed circuit board. These can be arranged with the interposition of a thermal compound on this or glued there.

For contacting the at least one lighting unit, the second part, the base part, may be provided with at least one element enabling a connection, e.g. a receiving base, can engage in the contacting elements of the lighting unit as soon as the lighting unit (s) comprehensive first part is folded onto the base part. Contacting the at least one lighting unit takes place automatically or by itself, without the need for further action to be taken. In the region of the base part, a wiring or prewiring can be provided, by which the connection enabling element is connected to the electrical power supply or can be.

To provide watertightness, seals are provided. As a result, it is possible for electronic components and sections of the light-emitting device which can be supplied or supplied with electric power to be accommodated in a housing part which is sealed against ingress of water. Otherwise, water could penetrate between the first and second parts due to leaving the gap between the first and second parts. Such sealing of components to be protected from moisture or moisture of the light-emitting device takes place either by engaging the housing part in a provided in the second part, the base part, groove or by engagement of the housing part with a counter-profile of the housing part, which provided on the second part is, or by externally embracing the components to be protected receiving housing part by a counter-profile on the second part of the light-emitting device. In the groove or in or on the mating profile, at least one seal can be arranged, which is the part of the light-emitting device to be protected, that is to say the part which is to be protected inside the housing part

Components of the light-emitting device, seals against ingress of moisture or moisture or water into the interior of the housing part.

Accordingly, when the first part comprising the at least one lighting unit and the second or base part lie on top of one another, a protective seal is achieved for the components to be protected. The air flow around ribs and / or pins or pins can be exposed to the action of moisture and moisture, so that they are arranged surrounding the housing part on the first part of the light-emitting device. By circulating with air they dry comparatively quickly even when exposed to moisture or moisture or water.

The light-emitting device can be configured as a light-emitting device which automatically switches on and off, ie as one which can be switched on and off by a reporting unit, in particular a high-frequency signaling unit which records the movement of persons and, accordingly, the at least one illumination unit turns on and off. Such a reporting unit can be accommodated in particular centrally or centrally in the interior of the dome-shaped cover covering the at least one lighting unit of the first part of the light-emitting device which surrounds the at least one lighting unit, adjacent to the at least one lighting unit. For adjusting the follow-up time, the range and other adjustable properties of the automatic light-emitting device, such as a ceiling or wall light, at least one potentiometer can be provided. This can be arranged in the first part which can be folded down from the base part and which comprises at least one lighting unit. For adjusting the potentiometer, the first part comprising this is accordingly folded away from the second or base part of the light-emitting unit, the potentiometer is adjusted, and the part comprising it and the at least one lighting unit are pivoted or folded back onto the base part and possibly with it connected or fixed to this.

Furthermore, it proves to be advantageous, a remote control device for adjusting in particular such a potentiometer and / or for adjusting other features of the light-emitting device, as well as for dimming the light-emitting device or its illumination unit (s), and / or to provide for switching on and off of individual lighting units. Particularly advantageous here proves to be an infrared remote control device. Furthermore, by providing a plurality of light-emitting devices in a room, in particular a corridor, switching on and off of the light-emitting devices controlled by the remote control device can be provided via such. Further, programming of the light emitting devices may be provided to programmably turn on and off. It is likewise possible to design the light-emitting devices and to provide them with transmitting and receiving units such that they can communicate with one another and, upon detection of a movement in the area of one of the light-emitting devices, emit a signal to the other light-emitting devices, so that these also be switched on or off depending on the program. A transmission of signals can be carried out between the individual light-emitting devices, for example by radio.

The light-emitting device may, for example, have a similar performance as conventional radiators, for example 22 watts. This corresponds to about 2000 to 2400 lumens, so that a very good cooling makes sense and can be done by a heat dissipation via convection by the number of air flow around ribs or pins or pins.

The at least one lighting unit can also be made dimmable, in particular a slow switching on and off are provided by this. Furthermore, it is possible to leave them permanently switched on with a very low brightness and to provide an increase in brightness only when detecting a movement in the detection area of the light-emitting device.

By allowing for heat dissipation via convection by providing the number of air flow around ribs or pins or pins, the life of such a light-emitting device, in particular a ceiling or wall light, compared to conventional light-emitting devices or ceiling or wall lights before all those who are with Light emitting diodes are provided, be significantly increased, for example, be over five years.

Figur 1

eine seitliche Querschnittsansicht durch eine erfindungsgemäße Licht aussendende Einrichtung,

Figur 2

eine perspektivische Draufsicht auf die Licht aussendende Einrichtung gemäß Figur 1, in teilweise geschnittener Ansicht und in Draufsicht auf den Beleuchtungseinheiten umfassenden Teil,

Figur 3a bis Figur 8

bzw. Figur 3b und Figuren 9a bis 11 perspektivische Ansichten der einzelnen Montageschritte einer erfindungsgemäßen Licht aussendenden Einrichtung, wobei

Figur 3a

eine perspektivische Ansicht der Montage eines Basisteils (erster Montageschritt) bei der Licht aussendenden Einrichtung gemäß Figur 1,

Figur 3b

eine perspektivische Ansicht der Montage eines Basisteils bei einer zweiten Ausführungsform einer erfindungsgemäßen Licht aussendenden Einrichtung (alternativer erster Montageschritt),

Figur 4

eine perspektivische Ansicht der Montage eines Kunststoffrings auf dem Basisteil gemäß Figur 3a (zweiter Montageschritt),

Figur 5

eine perspektivische Ansicht eines erfindungsgemäßen die Beleuchtungseinheiten und Luft umströmbare Rippen umfassenden Teils,

Figur 6

eine perspektivische Ansicht der Montage des die Beleuchtungseinheiten umfassenden Teils an dem Basisteil gemäß Figur 3a (dritter Montageschritt),

Figur 7

eine perspektivische Ansicht des auf den Basisteil hochgeklappten, die Beleuchtungseinheiten umfassenden Teils, wobei Basisteil und der die Beleuchtungseinheiten umfassende Teil aneinander durch Schrauben fixiert werden (vierter Montageschritt),

Figur 8

eine Seitenansicht der fertig montierten Licht aussendenden Einrichtung,

Figur 9a und 9b

perspektivische Ansichten der Montage des die Beleuchtungseinheiten umfassenden Teils an dem Basisteil gemäß Figur 3b (alternativer zweiter Montageschritt),

Figur 10

eine perspektivische Ansicht des auf den Basisteil hochgeklappten, die Beleuchtungseinheiten umfassenden Teils, wobei die Teile durch Schrauben aneinander fixiert werden (alterativer dritter Montageschritt), und

Figur 11

eine perspektivische Ansicht eines Kunststoffrings, der auf die Licht aussendende Einrichtung im Montagezustand nach Figur 10 aufgebracht wird (alternativer vierter Montageschritt) zeigt.

For further explanation of the invention embodiments of this will be described in more detail below with reference to the drawings. These show in:

FIG. 1

a side cross-sectional view through a light-emitting device according to the invention,

FIG. 2

a perspective top view of the light emitting device according to FIG. 1 , in a partially sectioned view and in a plan view of the lighting units comprising part,

Figure 3a to Figure 8

respectively. FIG. 3b and FIGS. 9a to 11 perspective views of the individual assembly steps of a light-emitting device according to the invention, wherein

FIG. 3a

a perspective view of the mounting of a base part (first assembly step) in the light-emitting device according to FIG. 1 .

FIG. 3b

a perspective view of the mounting of a base part in a second embodiment of a light-emitting device according to the invention (alternative first assembly step),

FIG. 4

a perspective view of the mounting of a plastic ring on the base part according to FIG. 3a (second assembly step),

FIG. 5

a perspective view of a part according to the invention comprising the lighting units and air einströmbare part,

FIG. 6

a perspective view of the assembly of the lighting units comprising part of the base part according to FIG. 3a (third assembly step),

FIG. 7

a perspective view of the folded up on the base part, the lighting units comprising part, wherein the base part and the lighting unit comprising parts are fixed to each other by screws (fourth assembly step),

FIG. 8

a side view of the fully assembled light emitting device,

FIGS. 9a and 9b

perspective views of the assembly of the lighting unit comprising part of the base part according to FIG. 3b (alternative second assembly step),

FIG. 10

a perspective view of the folded up on the base part, the lighting units comprising part, wherein the parts are fixed by screws to each other (alternative third assembly step), and

FIG. 11

a perspective view of a plastic ring, according to the light-emitting device in the assembled state FIG. 10 is applied (alternative fourth assembly step) shows.

FIG. 1 shows a cross-sectional view of a light-emitting device 1 in the form of a ceiling light. However, this could also be a wall lamp. It comprises a base part 2 and a lighting units 3 in the form of LEDs comprising lighting part 4. The two parts 2 and 4 are hingedly connected to each other via a hinge 5 and hinge. This is better the Figures 6 and 9a, 9b which each show a perspective view of the assembly steps 2 and 3 during assembly of the light-emitting device 1. Here, each of the lighting units 3 comprehensive lighting part 4 is folded away from the base part 2 at an angle α., By an arrow 6 is in FIG. 6 or 9b the folding or pivoting indicated in particular by about 90 °.

The base part 2 can, as in FIG. 1 indicated, connected by screws 7 with the ceiling 8 or the wall of a room. How better the FIGS. 3a and 3b can be removed, are used in the light-emitting device 1 shown there four screws 7, which are used for attaching the respective base part 2 on the ceiling 8 - or in the wall mounting a wall. Like that FIGS. 3a and 3b can also be removed, the base part 2 is formed substantially flat and includes, inter alia, a terminal socket 9 for connecting the lighting units 3 to a power supply. The latter is in Figure 3a, 3b but not to see nor the connection of the terminal socket 9 to such a power supply. The base part 2 can be pre-wired accordingly to allow after folding or swiveling up the lighting units 3 comprehensive lighting part 4 on the base part 2 and intervention provided on the lighting units 3 contacting elements in the terminal socket 9 directly contacting and thus a power connection of the lighting units 3 ,

The base part 2 further comprises a joint bushing 50 or 150 into which a joint part 51 or 151 of the joint 5 or hinge part can engage, wherein the joint part 51 is attached to the illumination part 4, in particular the Figures 5 . 6 . 9a, 9b can be seen. The hinge part 51 and 151 is formed at the end approximately U-shaped, possibly with end projecting portions, as in the FIGS. 9a, 9b indicated, and can engage with this end 52 and 152 in the joint socket 50 and 150 and thereby hold articulated. The joint bushes 50 and 150 according to the embodiments of the FIGS. 3a and 3b differ in that the in FIG. 3a shown joint socket 50 protrudes clearly on the outside 24 of the base part 2 to accommodate the less strongly on the upper side of the lighting part 4 projecting hinge part 51, while the in FIG. 3b shown joint socket 150 projects less strongly on the outer side 24 of the base part 2, the hinge part 151, however, strongly protrudes at the top of the lighting part 4, as the FIGS. 9a and 9b can be seen. Of course, other variants of joints 5 or hinges for hingedly connecting base part 2 and lighting part 4 can be provided.

The lighting unit 4 comprising the lighting units 3 also has a number of air flow around ribs 10. These are especially good FIG. 5 refer to. The air flow around ribs 10 serve to dissipate by convection heat that is generated by the lighting units 3 in their operation as waste heat from the interior of the light-emitting device 1 and the ceiling or wall light. In order to make this possible, a gap 11 remains between these two parts 2 after the finished assembly of the base part 2 and the illumination part 3 comprising the illumination units 3 and 4, how particularly good the FIGS. 1 and 7 and 8 can be seen. Air can pass through this gap 11 into the interior of the light-emitting device 1, into the air space 12 formed there due to the distance between the two parts 2 and 4, in which the ribs 10 are arranged. Around this, the air can flow around and in this case take away the heat emitted by the lighting units / LEDs 3 and transport it from the interior of the light-emitting device 1 to the outside.

The air flow around ribs 10 are arranged on the upper side 115 of a cooling plate 15, as the cross-sectional view in FIG. 1 can be removed. They are also adjacent in rows and partially offset from one another. Partially, they extend straight in their longitudinal direction and partially have an angled shape, such as FIG. 5 can be removed. The ribs each have a height extent h and a longitudinal extent I, wherein the longitudinal extent I is usually greater than the height extent h. However, this can be different with small short ribs. In cross section, the ribs 10 are usually narrow, as well FIG. 5 can be removed, wherein they may have a different width, in particular in the foot region 101, in which they are arranged on the cooling plate, they may be formed wider than in the opposite head portion 102. The ribs 10 have by their shape a comparatively large area. As a result, a large cooling surface is created, which can be flowed around by air, so that a particularly good heat dissipation is possible.

Like that FIGS. 9a and 9b can be removed, instead of or in addition to ribs 10 pins or pins 100 may be provided and arranged on the cooling plate 15. These are arranged like a brush in rows and form in the in this FIGS. 9a, 9b shown embodiment, a whole field of pins or pins. The pins or pins 100 are also arranged on the upper side 115 of the cooling plate 15.

Again FIG. 2 can be removed, the LEDs 3 are arranged in segments 13. According to FIG. 2 six segments 13 are provided, each comprising ten LEDs 3. The LEDs 3 are arranged on boards 14 and on this glued over a thermal grease. The area provided with the LEDs 3 is substantially flat, as well FIG. 2 and the cross-sectional view of the light-emitting device 1 in FIG FIG. 1 can be taken very well. The LEDs 3 are arranged with their boards 14 on the underside 116 of the cooling plate 15.

In the center of the lighting unit or LEDs 3 comprehensive lighting part 4 electronic components and in particular a reporting unit 16 are arranged, which may be an RF detector that detects movements in space. In order to be able to detect these, the detection area of the reporting unit 16 is directed in the direction of the room. For protection of both the lighting units or LEDs 3 and the reporting unit 16, the lighting part 4 comprises a dome-shaped cover 17. This may consist of a plastic, as well as the base part 2. The dome-shaped cover 17 may be translucent, in particular opaque, be formed so Although a passage of light is possible, however, neither the LEDs 3 nor the reporting unit 16 or other components of the light-emitting device 1 can be recognized by the dome-shaped cover 17 therethrough.

In order to prevent ingress of water into the interior of the light-emitting unit 1, in particular the electronic components 19 of the light-emitting device 1 are accommodated in a housing-like receptacle 20. The box-like receptacle 20 may be in a circumferential groove 21 in the base part 2, in the FIGS. 3a, 3b . 4 . 6 . 9a and 9b is implied, intervene. In the circumferential groove 21, a seal 22 is arranged, which allows a watertight seal, thus a watertight recording of the electronic components 19 in the interior of the light-emitting device. 1

After mounting the base part 2 on the ceiling 8 or a room wall is, as in FIG. 4 indicated, first a plastic ring 23 fixed to the base part 2, for example by at least one screw 25. The plastic ring 23 serves on the one hand the outer cover and on the other hand also decorative purposes, for example, color and / or be particularly designed by its shape.

In the third assembly step, the lighting part 4 can be suspended with its hinge part 51 with its approximately U-shaped end 52 in the hinge bushing 50 of the base part 2. As FIGS. 6 and 7 can be removed, the illumination part 4 can subsequently be pivoted to the base part 2 and, for example, latched and / or fastened thereto, as by the screws 18 shown. The latching can already take place by contacting pins of the lighting units 3 in the connection socket 9 or engage openings provided therein, so that the lighting units 3 are contacted via this. Also by the engagement of the housing-like receptacle 20 in the circumferential groove 21, which is provided with the seal 22, a connection between the illumination part 4 and the base part 2 can take place. Furthermore, of course, a further fixing or latching device can be provided which prevents accidental folding down of the lighting part 4 of the base part 2. Also, the hinge 5 itself can already provide a locked position in which the lighting part 4 is pivoted to the base part 2 zoom. The visible after the final assembly of the light emitting device 1 gap 11 and the visible therethrough and with air flow around ribs 10 are the side view of the light-emitting device 1 in FIG. 8 refer to. At least the head portions 102 of the ribs 10 (see FIG. 5 ) are in the air space 12 (see FIG. 1 ), which is supplied through the gap 11 with air or in the air from the air space 12 through the gap 11 to the outside of the light-emitting device 1 can emerge. The ribs 10 and / or the optionally provided pins or pins 100 can accordingly be flowed around by air.

In a variant of the assembly steps, the plastic ring 23 is not mounted directly after the mounting of the base part 2 on the ceiling 8 or a room wall, but only after the installation of the lighting part 4 on the base part 2. This variant is the FIGS. 9a, 9b and 10 refer to. To FIG. 10 Lighting part 4 and base 2 are fixed by screws 18 together. As in FIG. 11 shown representing the alternative fourth assembly step, the plastic ring 23 on the base part 2, on the outside circumferentially around this appropriate. The assembled state then corresponds to the in FIG. 8 and in the lateral cross-sectional view according to FIG. 1 shown.

As FIG. 11 can still be removed, the plastic ring 23 is a slotted ring, so that it is not closed, but is designed to be open around better around the dome-shaped cover 17 around. Of course, in principle, a closed ring can be provided, as in FIG. 4 is shown.

To change the delay time of the light-emitting device 1 or the range of the reporting unit 16, it is possible to provide a potentiometer or other adjustment. This or this can also be arranged centrally in the interior of the light-emitting device 1 in the area of the electronic components 19 or the reporting unit 16, advantageously accessible after the illumination part 4 has been folded away from the base part 2.

Furthermore, a remote control device, in particular an infrared remote control device, for setting such a potentiometer or other setting means for changing the delay time when switching on and off of the lighting units / LEDs 3 and for the response of the reporting unit 16 may be provided.

If a plurality of light-emitting devices 1 are arranged, for example, in a corridor of a building, each or at least part of the light-emitting devices 1 can comprise a communication unit for communicating with the other light-emitting devices 1. For example, a transmission by radio, thus a radio transmitter and a radio receiver can be provided at or in the light-emitting devices 1 in order to be able to switch the light-emitting devices on and off in a coordinated manner. It is particularly advantageous to program the switch-on and switch-off capability of the individual light-emitting devices 1, so that they can be switched on and off in a targeted manner in accordance with the predetermined program sequence and, if necessary, successively adjusted with respect to their brightness and their response.

In particular, a device for dimming, that is to say for the stepwise or continuous raising and lowering of the brightness of the emitted light can be provided. It is also possible to radiate only a small amount of light permanently.

In addition to the embodiments of light-emitting devices described above and shown in the figures, in particular ceiling or wall lights, as well as any combination of the features and variants mentioned can still numerous others are formed, which are each formed at least in two parts. In this case, a gap is provided between the individual parts, in which a number of air-flowable ribs and / or optionally pins or pins is arranged for heat dissipation of the heat emitted by light-emitting illumination units heat.

LIST OF REFERENCE NUMBERS

1

Light emitting device / ceiling or wall light

2

base

3

Lighting unit / LED

4

lighting part

5

joint

6

arrow

7

screw

8th

ceiling

9

connection base

10

Air-flowable rib

11

gap

12

airspace

13

segment

14

circuit board

15

heatsink

16

reporting unit

17

domed cover

18

screw

19

electronic components

20

boxy reception

21

circumferential groove

22

poetry

23

Plastic ring

24

outside

25

screw

50

joint bush

51

joint part

52

T-shaped end

100

Air flowable pins / pins

101

footer

102

head area

115

Top of 15

116

Bottom of 15

150

joint bush

151

joint part

152

The End

α

angle

H

height extension

I

longitudinal extension

Claims (7)

1. Light emitting device (1), particularly wall or ceiling light, having at least one illumination unit (3), particularly an LED unit, the device (1) consisting of at least two parts, a gap (11) being provided between the at least two parts (2,4) and the illumination unit (3) being arranged in the first part (4), the first part (4) comprising a number of ribs (10) and/or pegs or pins (100) which can be circulated by air for discharging heat produced by the illumination unit (3), and the second part (2) being designed as the base part of the light emitting device (1) and being mountable to the ceiling (8) or wall of a room and the first part (4) accommodating the illumination unit (3) being connectable or connected to the base part jointed (5) and/or detachable,
   characterised in that
   a sealing of the components (19) to be protected against humidity of the light emitting device (1) being realised by the part of the housing (20) comprising the components to be protected engaging into a notch (21) provided in the second part (2) or by the part of the housing (20) comprising the components (19) to be protected cooperating with a counter profile of the housing, which is provided on the second part (2), or by encompassing the outer sides of the part of the housing (20) comprising the parts (19) to be protected by means of a counter profile on the second part (2) of the light emitting device (1).
2. Light emitting device (1) according to claim 1,
   characterised in that
   the ribs (10), pegs or pins (100) which can be circulated by air extend into the air space (12) created by maintaining the gap (11) between the first (4) and second part (2) of the light emitting device (1) or are situated in the same.
3. Light emitting device (1) according to claim 1 or 2,
   characterised in that
   the ribs (10), pegs or pins (100) which can be circulated by air are arranged in such a way that they surround the illumination unit (3), especially from all sides.
4. Light emitting device (1) according to any of the preceding claims,
   characterised in that
   the ribs (10), pegs or pins (100) which can be circulated by air consist of metal, especially die cast aluminium.
5. Light emitting device (1) according to any of the preceding claims,
   characterised in that
   the ribs (10), pegs or pins (100) which can be circulated by air are mounted on a heat sink (15) or are connected with the same.
6. Light emitting device (1) according to claim 5,
   characterised in that
   the at least one illumination unit (3) being arranged on the heat sink (15) on which the ribs (10), pegs or pins (100) are disposed, or on a further heat sink, particularly the at least one illumination unit (3) being disposed on the lower side (116) and the ribs (10), pegs or pins (100) being disposed on the upper side (115) of the heat sink (15).
7. Light emitting device (1) according to any of the preceding claims,
   characterised in that
   for applying electrical contact to the at least one illumination unit (3) the second part (2) is provided with at least one element (9) enabling connection, in which the contacting elements of the illumination unit (3) are insertable when the first part (4) comprising the illumination unit (3) is put on the second part (2).

Images