• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a recessed luminaire (100) with means for mounting the recessed luminaire (100) in or on a mounting opening (251) of a wall or ceiling (250), in particular a suspended ceiling, lighting means and coolant for dissipating during operation of the Lantern resulting heat, wherein the coolant in the direction of a Lichtabstrahlrichtung the recessed light (100) in an area outside the wall or below the ceiling (250) extend.
    公开号:AT15500U1
    申请号:TGM423/2014U
    申请日:2014-12-05
    公开日:2017-10-15
    发明作者:Dott Ing Favarolo Angelo
    申请人:Zumtobel Lighting Gmbh；
    IPC主号:
    专利说明:

    description
    DOWNLIGHT
    The present invention relates to a recessed luminaire, which has means for mounting on or in a mounting opening of a wall or a ceiling and is provided with cooling agents, via which the resulting during operation of the recessed light heat is dissipated. In particular, the invention relates to a downlight, which is to be mounted in a so-called. Suspended ceiling.
    As a "downlight" lamps are usually referred to, which are provided for attachment to a ceiling of a room to be illuminated and designed for a light output predominantly downwards. These are lights, which are usually designed as so-called recessed lights, in the mounting opening of a suspended ceiling element, e.g. a so-called Rigipsdecke to be installed.
    Such downlights exist in different forms, but in principle there is the problem that the resulting during operation of the lamp heat must be removed to avoid damaging temperature-sensitive components of the lamp. For this purpose, usually arranged on the back of the downlight heatsink used, which extend into the intermediate area between the suspended ceiling and bare ceiling and are designed to emit heat to the ambient air. In particular, solid aluminum components which have been used, for example, as heat sinks have proved suitable. be produced as a die-cast body and have a large surface area through a lamellar configuration, through which the heat exchange is favored.
    The efficiency of the cooling achieved in this way, ie the dissipation of heat during operation of the lamp depends on different factors. A not insignificant role in this case plays the distance between the raw ceiling and suspended ceiling, since the air is relatively little in motion in this intermediate area. In particular, no passive, so independent exchange with the air below the suspended ceiling can be achieved for this area, with the result that the air in the space usually has a higher temperature. This directly affects the efficiency of the heat sink. Ultimately, very narrow gaps can even lead to no air convection taking place at all and thus in principle the effect of the heat sink is negligible. Finally, the height of the gap also limits the possibility of using heat sinks of any size. For very narrow spaces only compact equipped heatsink can be used, which in turn has a negative effect on the cooling of the lamp. Ultimately, these factors mean that there is a problem with downlights installed in suspended ceilings with relatively low clearances in terms of dissipation of the heat generated during operation.
    The present invention is therefore based on the object to provide a novel way to achieve as efficient as possible downlights of the type described above, but in spite of everything with a little effort to dissipate the heat.
    The object is achieved by a recessed luminaire, which has the features of claim 1. Advantageous developments of the invention are the subject of the dependent claims.
    The solution according to the invention is based on the idea of designing the coolant used to dissipate the heat in such a way that it does not extend into the space between suspended ceiling and raw ceiling, in which - as described above - a heat exchange is difficult to achieve, but instead, in the direction of a direction of light emission of the downlight or the recessed light into an area below the ceiling. According to the invention, the components responsible for the heat dissipation now extend into a region which, in any case, will have a lower temperature than that
    Area between suspended ceiling and raw ceiling. In addition, significantly more efficient air movements can occur in this area, which has a positive effect on the heat exchange between coolant and ambient air. Ultimately, therefore, a significantly better dissipation of heat for the lamp can be achieved by this measure.
    According to a recessed luminaire with means for mounting the recessed light in or on a mounting opening of a wall or ceiling, in particular a suspended ceiling is proposed accordingly, with bulbs and coolants for deriving the resulting during operation of the lamp heat, wherein extend the coolant in the direction of a Lichtabstrahlrichtung the recessed light in an area outside the wall or below the ceiling.
    LEDs are preferably used as lighting means in the recessed luminaire according to the invention, it being possible in particular for the cooling means to form a support surface for the LEDs or for a support element for the LEDs. In this case, the cooling means may in particular be a housing, which is designed like a pot and extends from the lighting means in the light emission direction of the recessed light. The cooling effect of the housing can be particularly preferably optimized by the fact that the housing has a bottom surface which forms the support surface for the LEDs or for a support element for the LEDs, then in particular the housing is integrally formed.
    The addressed housing can be used in particular for receiving a turn pot-shaped reflector, which extends from the bulbs to the opening of the housing. Preferably, the reflector is formed by a separate component, which, for example. By means of a diaphragm releasably held in the housing, in principle, however, it would also be conceivable to use the housing itself as a reflector.
    The housing consists of a very good heat conducting material. Ideally, it is made of aluminum and has, for example, a wall thickness of about 2-3 mm. In certain cases, however, the use of a good heat-conducting plastic would also be conceivable.
    The invention will be explained in more detail with reference to the accompanying drawings. 1 shows the lateral view of a first exemplary embodiment of a recessed luminaire in the form of a downlight, and [0014] FIG. 2 shows a sectional view of a second embodiment of a downlight according to the invention.
    The invention will be explained in more detail below with reference to two downlights. However, the measures for cooling the lamp could also be used in recessed lights, which are mounted in the mounting hole of a wall.
    Both Figures 1 and 2 show two substantially identically designed variants of a downlight according to the invention, which differ only in that in the variant of Figure 1 in addition a "classic" heat sink 200 is provided which extends in a known manner in the interspace 260 between a suspended ceiling 250 and one - not shown - raw ceiling extends. However, as the variant according to FIG. 2 shows, in certain situations it is also possible to completely dispense with such an additional heat sink, since the further measures for dissipating the heat, described in more detail below, are sufficient and the efficiency of the heat sink 200 due to the factors described above anyway limited.
    The inventive, generally provided with the reference numeral 100 downlight is attached to the suspended ceiling 250 in the usual way. It is thus within this suspended ceiling 250, which may for example be formed by a so-called. Rigipsdecke, an installation opening 251 is formed, in which the downlight 100 is to be mounted. For this purpose, initially a so-called. Mounting frame 50 which has an angled configuration with an outwardly directed, in the assembled state on the underside of the cover 250 adjacent flange portion 51 and extending into or through the opening 251 of the ceiling 250 circumferential ridge 52nd The circumferential flange 51 serves to compensate or conceal any irregularities in the recessed ceiling opening 251. It limits on its inside the actual installation opening into which then the components of the downlight 100 described in more detail below are used. In certain situations, this flange 51 - at least partially - plastered after attachment to the ceiling 250, so that a particularly inconspicuous transition between the ceiling and the elements of the downlight 100 is achieved.
    The mounting of the mounting frame 50 on the ceiling 250 can be done in many ways, from the prior art, for example. Screw or special locking elements are known, which jamming the suspended ceiling 250 between the flange portion 51 of the mounting frame 50 and the locking elements cause. For the problem underlying the invention, namely, the heat that is generated during operation of the downlight 100 to dissipate efficiently, however, these assembly measures play no role, so this is not discussed further below.
    On the mounting frame 50 itself is then carried out preferably releasable attachment of the other components of the downlight 100, which in particular the illustration of Figure 2 can be removed. This is in particular a so-called. Light carrier 40 which is configured in a circle and has a bottom surface 41, which serves the arrangement of the lighting means and the housing described in more detail below. The light carrier 40 has a circumferential wall 43, engage with the holding means 45, which serve to support the light carrier 40 on the mounting frame 50. These holding means 45 can also be designed differently and, for example, be designed such that the light carrier 40 is rotated with the housing arranged thereon about two axes or is mounted so that it can be freely put in order to selectively set the direction of the light output of the downlight 100. Likewise, however, it would also be conceivable that the light carrier 40 is connected in a fixed position with the mounting frame 50 and accordingly there is no possibility to modify the arrangement and orientation of the housing.
    In the present case, both the mounting ring 50 and the other components of the downlight 100 have a substantially rotationally symmetrical shape, but the invention is by no means limited to such a configuration. For example. For example, the mounting frame 50 could also be square or rectangular in the same way, and the housing of the downlight 100 described in more detail below could be made e.g. have a truncated pyramidal shape.
    As light sources come in the downlight 100 according to the invention one or more LEDs 20 are used, which are arranged on an LED board 21. From these LEDs 20 extends a pot-shaped reflector 30, the reflective circumferential wall 31 may be formed in a desired manner to focus the emitted light from the LEDs 20 and emit in the light emitting direction. A - not shown - operating device for powering the LEDs 20 could here either be arranged as a separate component in the ceiling space 260 and connected via a cable connection with the LEDs 20 or - especially in the variant of Figure 2, in which at the top of the light carrier 40th no additional heat sink is provided - rest on the light carrier 40.
    According to the invention, a housing 10 is further provided, which serves to dissipate the resulting during operation of the downlight 100 heat. The cup-shaped housing 10 has side walls 11, which extend from the LEDs 20 to the bottom and in this case enclose the reflector 30. On the underside of the housing 10, a fastening ring 35 is arranged, which serves for releasably securing the reflector 30 in the housing 10. As shown, this latching, for example, with the housing 10 mounting ring 35 has an inwardly projecting circumferential bearing surface 36, on which the
    Lower edges of the reflector 30 rest.
    The housing walls 11 of the downlight 100 thus extend to the bottom and thus in a space portion 270 below the suspended ceiling 250. As a result, the housing 10 in contact with the normal ambient air of the room, then take place a heat exchange, so that the heat is released to the environment. Of course, in order to optimize this cooling effect, the housing 10 consists of a good heat-conductive material, with aluminum in particular offering itself for this purpose. To achieve sufficient heat conduction, the housing 10 should have a sufficient wall thickness, wherein in the case of aluminum preferably a thickness in the range of about 2-3 mm is provided. If other materials are used, wherein, for example, the use of a good heat-conducting plastic may be provided, the wall thickness may have to be adapted accordingly.
    A particularly good transfer of heat from the LEDs 20 on the side walls 11 of the housing 10 is achieved according to a preferred embodiment in that the housing 10 itself forms a support surface for the LED board 21. The housing 10 thus has a bottom surface 12, which forms a planar bearing surface for the lighting means and preferably integrally merges into the side walls 11 at its edge region. In principle, a multi-part design of the housing 10 would be conceivable, but of course the one-piece shape shown leads to a particularly good heat transfer. The bottom surface 12 is arranged in a recess 42 of the bottom surface of the light carrier 42 and may, for example, be bolted to this, in order to achieve a secure support.
    In the illustrated embodiment, the bottom surface 12 of the housing 10 has a diameter of about 50-60mm, the height of the housing 10 is about 80-100mm. On its underside, the housing 10 has a diameter in the range of about 150 mm, which corresponds approximately to the diameter of the mounting hole 251 of the suspended ceiling 250. However, these size specifications are only to be understood as examples and may possibly vary accordingly.
    An alternative embodiment of the downlight 100 according to the invention could consist in that the housing 10 itself forms the reflector 30. In this case, the housing 10 would have to consist of a corresponding, well-reflecting material, which at the same time also has a high thermal conductivity. Of course, aluminum is again available for this purpose. Alternatively, however, the inner wall of the housing 10 could also be provided with a reflective coating.
    Finally, it has been shown that the heat generated during operation of the LEDs can be dissipated very well through the housing to the ambient air of the room by the illustrated inventive measures. The efficiency of the heat transfer is in this case so good that in certain situations even - as shown in Figure 2 - can be dispensed with a classic heat sink. As shown in FIG. 1, however, the heat sink mentioned above may optionally be additionally provided on the rear side of the light carrier, which is then designed in the classical manner and extends into the intermediate region between the suspended ceiling and the raw ceiling. The measures according to the invention can be realized with a relatively low outlay and correspondingly low costs.
    权利要求:
    Claims (12)
    [1]
    claims
    1. recessed luminaire (100) with • means for mounting the recessed luminaire (100) in or on a mounting opening (251) of a wall or ceiling (250), in particular a suspended ceiling, • bulbs and • coolants for dissipating the during operation The heat generated by the lamps, wherein the cooling means in the direction of a light emission direction of the recessed light (100) in a region outside the wall or below the ceiling (250) extend.
    [2]
    2. Recessed luminaire according to claim 1, characterized in that the light emitting means comprise LEDs (20).
    [3]
    3. Recessed luminaire according to claim 2, characterized in that the cooling means form a bearing surface for the LEDs (20) or for a carrier (21) for the LEDs (20).
    [4]
    4. Recessed luminaire according to one of the preceding claims, characterized in that the cooling means are formed by a housing (10) which extends from the bulbs pot-like in Lichtabstrahlrichtung the lamp (100).
    [5]
    5. Recessed luminaire according to claim 4, characterized in that the housing (10) has a bottom surface (12), which forms the support surface for the LEDs (20) and for the carrier (21) for the LEDs (20).
    [6]
    6. Recessed luminaire according to claim 5, characterized in that the housing (10) is integrally formed.
    [7]
    7. Recessed luminaire according to one of claims 4 to 6, characterized in that the housing (10) is formed of aluminum.
    [8]
    8. Recessed luminaire according to claim 7, characterized in that walls (11) of the housing (10) have a wall thickness of about 2 to 3mm.
    [9]
    9. Recessed luminaire according to one of claims 4 to 8, characterized in that within the housing (10), a separate reflector (30) is arranged, which preferably extends from the lighting means to an opening of the housing (10).
    [10]
    10. Recessed luminaire according to one of claims 4 to 8, characterized in that inner walls of the housing (10) are reflective or provided with a reflective coating.
    [11]
    11. Recessed luminaire according to one of the preceding claims, characterized in that it comprises an additional heat sink (200) which is arranged on a side opposite to the cooling means.
    [12]
    12. Recessed luminaire according to one of the preceding claims, characterized in that it is a downlight. For this 2 sheets of drawings
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    同族专利:
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    引用文献:
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    US20100110699A1|2007-09-27|2010-05-06|Enertron, Inc.|Method and Apparatus for Thermally Effective Removable Trim for Light Fixture|
    DE202009004252U1|2009-03-31|2010-05-27|BÄRO GmbH & Co. KG|lamp|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
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