EP2169301A1 - Lampe dotée d'un boîtier de lampes et d'un élément de sortie de lumière transparent - Google Patents

Lampe dotée d'un boîtier de lampes et d'un élément de sortie de lumière transparent Download PDF

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Publication number
EP2169301A1
EP2169301A1 EP09171381A EP09171381A EP2169301A1 EP 2169301 A1 EP2169301 A1 EP 2169301A1 EP 09171381 A EP09171381 A EP 09171381A EP 09171381 A EP09171381 A EP 09171381A EP 2169301 A1 EP2169301 A1 EP 2169301A1
Authority
EP
European Patent Office
Prior art keywords
lamp
luminaire
housing
light exit
partition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09171381A
Other languages
German (de)
English (en)
Inventor
Helmut Feurle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2169301A1 publication Critical patent/EP2169301A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/15—Thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/506—Cooling arrangements characterised by the adaptation for cooling of specific components of globes, bowls or cover glasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources

Definitions

  • the present invention relates to a luminaire with a luminaire housing and a transparent light exit element.
  • the luminaire housing has, for example, a light exit opening, which is closed by the light exit element.
  • means for holding and supplying power to at least one elongate gas discharge lamp, in particular a fluorescent lamp, are arranged in the luminaire housing.
  • the mode of operation of a fluorescent lamp requires that different temperature ranges form over the length of the lamp body. Due to the physical processes during lamp operation, a defined location results, at which the lamp has its lowest temperature during normal operation. The aforementioned location is generally referred to as the cool spot of the lamp or cool spot.
  • the temperature of the lamps In order to improve the operation of gas discharge lamps and to be able to optimally design them in order to achieve optimum efficiency during operation, the temperature of the lamps must be suitably tempered. The temperature should therefore be within a specified range. The aforementioned range for the operating temperature or the operating point of the lamp is usually relatively tight tolerated. Furthermore, in the case of gas discharge lamps, the cool spot is arranged at a specific position, depending on the type of lamp. An optimized light output is obtained when the cool spot is at a preferred temperature of about 45 degrees Celsius. In so-called T16 lamps, which take their name from the fact that their tube has a diameter of 16 mm, the optimum temperature range is 40 to 44 ° C.
  • T16 lamps mentioned above unlike the likewise known T26 lamps with a broader lamp diameter, have supply lines of different lengths to the lamp electrodes.
  • This asymmetrical design A T16 lamp with respect to its electrodes means that in these lamps, the cool spot comes to rest at the end at which the longer electrode lead is placed or at which the distance of the electrode to the front end of the lamp is greater.
  • the cool spot is symmetrically designed T26 lamps in the middle of the lamp.
  • T16 lamps are more temperature sensitive than T26 lamps.
  • the present invention particularly relates to such cases in which the lamp is disposed within a closed lamp housing or within a space enclosed by the housing and a cover. Due to the lack of air circulation, this often results in the problem that within the luminaire housing or enclosed space is a temperature above the optimum cool spot temperature. Again, the efficiency of the lamp drops and so it would be desirable to lower the temperature at the cool spot a bit. When operating high power types, the luminaire efficiency even drops rapidly. The above indicates a saturation effect, which in turn can affect life and aging.
  • the present invention is therefore based on the object to improve the luminaire so that even with high ambient temperatures of the cool spot can be kept in an optimal temperature range or operating point and thus the lamp can achieve an optimized luminous flux.
  • a luminaire is proposed with a luminaire housing which has a light exit opening, which is closed by a transparent light exit element, wherein in the luminaire housing means for holding and power supply at least one elongate gas discharge lamp, in particular a fluorescent lamp are arranged, characterized by at least one arranged in the luminaire housing partition, which thermally separates a region surrounding the cool spot of the lamp from the remaining interior of the lamp housing.
  • a partition wall for a luminaire is also proposed with a luminaire housing which has a light exit opening which is closed by a transparent light exit element, wherein means for holding and supplying power to at least one oblong gas discharge lamp, in particular a fluorescent lamp, are arranged in the luminaire housing an upper and a lower portion, which in the assembled state forms a passage opening for the gas discharge tube. It also succeeds by the formation of two parts of a composite partition in a lamp to obtain a particularly simple, safe and time-saving installation. During maintenance, by removing the lower portion of the assembled partition, the gas discharge lamp may remain in the socket.
  • the lower section of the partition can be connected to the Light exit element be integrally or releasably connected.
  • the upper section can be pluggable mounted on the lamp housing.
  • the aforementioned luminaire has a cylinder-shaped partition which is arranged around the oblong gas discharge lamp at the cool spot.
  • enclosing the partition in the interest of good thermal separation or decoupling, with a small distance in the longitudinal direction of the lamp body.
  • the dividing wall in the longitudinal direction comprises part of the length of the tubular gas discharge lamp.
  • the partition has at least one opening. The arrangement of the opening can therefore be an exchange of air or a heat dissipation by thermal circulation.
  • the partition wall is integrally connected to the lamp housing or the light exit element.
  • the luminaire housing is in thermal communication with a planar heat sink, which has a surface structuring, in the interest of good heat dissipation, large convection surface, with an arrangement of cooling fins.
  • the material of the partition corresponds to the material of the lamp housing and / or the light exit element.
  • the components used for the partition wall are made of a transparent material such as polymethyl methacrylate (PMMA), polycarbonate (PC), polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene (ABS) or polytetrafluoroethylene (PTFE).
  • a transparent material such as polymethyl methacrylate (PMMA), polycarbonate (PC), polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene (ABS) or polytetrafluoroethylene (PTFE).
  • a luminaire according to any one of the preceding aspects is claimed, wherein the partition wall is integral and has a recess through which the tubular gas discharge tube can be made in the interest of ease of assembly.
  • the recess in the partition wall for a luminaire has a rubber seal or a fitting.
  • the partition wall has an upper portion and a lower portion.
  • the lower portion overlaps the upper portion in the interest of ease of assembly.
  • the lower portion of the partition is releasably connected to the light exit member and / or the lamp housing. Between the lower and the upper portion of the partition recesses are arranged, which are formed for the passage of the fluorescent lamp.
  • the partition wall is divided into the upper and lower portions along a connection line which is spaced parallel to a boundary line of the lower portion.
  • the connecting line runs through the center of the longitudinal axis of the lamp.
  • the lower and the upper portion of semi-circular recesses, which form a passage opening for the lamp in the assembled state.
  • the recesses extend, starting from the center of the lamp longitudinal axis, radially spaced from the outer circumference of the lamp.
  • the partition has a transparent or at least partially transparent plastic color with at least one vent hole.
  • the partition wall has on at least one side a partial or complete metal coating in the interest of affecting the heat distribution and the radiation passage. Furthermore, the partition wall has on at least one side a partial or complete surface structuring, for example a surface profile with a rough or mirror-like surface, or a section with cooling fins.
  • the previously described inventive concept of the thermal separation of the portion of the lamp that includes the cool spot from the other Area could also be used when an indirect lighting is desired, so light from lamps, which are arranged on an upper side of a lamp, to be emitted in the direction of a ceiling.
  • the lamp could be completely surrounded by the housing and the cover, in which case by means of a dividing wall the area which has the cool spot is thermally separated from the remaining enclosed area.
  • the thermal separation could also be effected in a simplified manner in that the area of the lamp containing the cool spot lies completely outside an enclosed area.
  • a luminaire is accordingly proposed with a luminaire housing, means for holding and powering at least one elongate gas discharge lamp, in particular a fluorescent lamp, and a transparent light exit element for emitting light, the luminaire housing and the light exit element having a space for accommodating at least one part enclose the lamp.
  • the luminaire housing and / or the light exit element have or form a passage opening and the means for holding and powering the lamp are arranged in such a way that the area of the lamp having the cool spot is inside the enclosed space and, in turn, from the latter remaining area of the lamp is thermally separated, so that the unwanted heating of this lamp area is avoided.
  • This embodiment is suitable, as already mentioned, in particular for lamps used for indirect lighting, since here the appearance of the lamp and the light emission are only insignificantly influenced by the fact that a part of the lamp is outside the enclosed area.
  • the majority of the lamp is disposed within an enclosed space and protected accordingly from external influences. Only the area of the lamp having the cool spot is arranged outside the enclosed space.
  • the cool spot is located near the end of one of the two lamp sockets.
  • the end region of the lamp is now separated from the remaining region.
  • the heat generated in the remaining area and in the light output is now prevented from entering the surrounding area of the cool spot. So here is a lower temperature than in the remaining luminaire housing.
  • the light output is improved.
  • the luminous flux is optimized.
  • the cool spot is in the middle of the lamp.
  • a middle area is separated from the remaining space of the luminaire housing.
  • the advantages that the luminaire housing in volume, in the interest of a flat design or low installation depth, can be reduced.
  • the lumen-per-watt ratio (efficiency) of the lamp can be increased.
  • the luminaire can even be used for a higher ambient temperature.
  • a third embodiment describes a variant in which the end region of the lamp with the cool spot is surrounded relatively closely by a casing.
  • two openings which are on the one hand near or below the cool spot and on the other hand above the lamp filament, an air circulation is to be generated, through which a cooling of the cool spot is sought. Measurements are still underway to improve the desired result.
  • the partition preferably consists of a transparent material, in particular PMMA, so that a light output can also be effected via the space which is assigned to the cool spot.
  • the partition affects the light output of the light only insignificantly. With a corresponding structure appears to the viewer who looks from below through the light exit element on the lamp, no change.
  • additional measures can be provided to provide the partition additionally with a reflective material, in particular to reflect heat radiation.
  • a surface structuring may be provided which promotes heat transport in one direction.
  • the aforementioned coupling in the case of a black anodized heat sink, aluminum or gray cast iron, smooth, with cooling fins or vertical cuts, for example, can be done by a screw connection with wing nuts for easy manual assembly.
  • a thermal paste any thermal contact resistances or surface roughness can be compensated.
  • conductivity improvement can be dispensed with a post-processing of areas. A later retrofitting or upgrade of the lamp when using a more powerful lamp is also possible.
  • the partition may be integrally formed with corresponding through holes for the lamps, in which case threading of the lamps before insertion into the lamp socket can be done easily.
  • the partition can also be configured in several parts, wherein a first area is already arranged in the housing, or even on the light exit element, such that the lamps can be easily introduced into the sockets. The second part of the partition is then placed subsequently accordingly to separate the two areas of the housing from each other.
  • a fourth embodiment of the present invention relates to the case that the lamp or lamps are used for indirect lighting and are accordingly arranged on the upper side of a lamp housing.
  • the lamps are usually not visible, it is not absolutely necessary that they are located completely within an enclosed space to produce a uniform optical image. Instead, it is now provided that only a part of the lamp or lamps are arranged within a region enclosed by the housing and a transparent light exit element.
  • the area of the lamp containing the cool spot is arranged outside this enclosed area, so that an effective dissipation of the heat into the environment is ensured.
  • the heat generated by the remaining area of the lamp does not have a negative effect, since there is again a thermal separation. Even in this case, it is thus ensured that the cool spot is in an optimum temperature range or operating point and thus an optimized luminous flux can be achieved.
  • a lighting arrangement or light 10 according to the first embodiment is shown.
  • the lamp has a cylinder-like elongated gas discharge lamp 1, which is housed in a lamp housing 6.
  • the luminaire housing is sketched double walled here purely by way of example, but it can just as well have a honeycomb structure or wall-reinforcing elements, webs or struts. Another design may be indicated if the lamp to be supported is heavy, the power dissipated to be dissipated is higher or the design itself is exposed to particular environmental conditions or vibration loads.
  • the above lamp 1 is a so-called T16 lamp.
  • the Cool Spot 12 is located on the left side of the front of the lamp, in Fig. 1 indicated by a dot on the lamp socket.
  • the cool spot may arise, for example, as a result of a standing wave or mode-shaped field distribution present in the cavity of the elongate gas discharge lamp or by the formation of a temperature distribution during the light emission.
  • the lamp housing 6 is closed at the bottom by a light exit element 5, for example, a transparent plate made of one of the aforementioned plastics such as PMMA.
  • the aforementioned plate can be a surface texture for equalization and / or emitting the light in a certain angular range of the transmitted light.
  • the lamp 1 is inserted with the lamp body 4, the lamp filaments 2a and 2b, feeders 3a and 3b at the two ends of the lamp in the arranged on both end faces of the lamp holder 7.
  • a (not shown) corresponding socket is arranged in the holder 7, which is connected to the lamp housing 6 and which establishes the connection between the lamp 1 and the light housing 6, a (not shown) corresponding socket is arranged.
  • the power supply is accommodated via corresponding resiliently mounted snap-in or rotatable contact connections, so that mechanical vibrations or noise of the lamp fail to occur during operation.
  • the dividing wall 8 is arranged in the vicinity of the cool spot 12 for separation into two different temperature ranges.
  • a recess or bore 50 in a lamp body 54 for example in the middle or two lamps arranged symmetrically to the center, such that the lamp can be pushed through a game and the room 1 with the temperature Temp 1 of the space 2 with the Temperature Temp 2 thermally separates.
  • a thermal separation means that a temperature difference between the two spaces is formed, so that the separated space 1 remains in the range of the optimum operating point at the cool spot, while the space 2, in which most of the light and heat emission takes place, have a different temperature can.
  • the partition may also have a further bore which favors the formation of a thermal flow field in the closed lamp or which has a grid for a certain flow resistance.
  • a heat sink can also be flanged, or the surface itself can be structured as a heat sink with unilateral ribs.
  • the partition wall can be made relatively simple, wherein, for example, a metallization in question, the radiation from the warmer area of the lamp length to avoid the cool spot.
  • a lamp 20 is shown with T26 lamp 21, according to the second embodiment, in which the cool spot 22 is formed in the middle.
  • the lamp is connected via the brackets 7 with the lamp housing 6 and has lamp filaments 2a, 2b and leads 23a and 23b respectively in the direction of the left and right ends or end faces of the lamp.
  • two partitions 28a and 28b are provided. Through the aforementioned partitions two rooms 2 room with the temperature Temp 2 outside and a room 1 with the temperature Temp 1 are created within the partitions.
  • the dividing walls can be provided with a rough surface structure or profiling, a vapor deposition or a heat-insulating layer or a multi-layered dividing wall in order to minimize radiation from portions of the gas discharge lamp located outside the space 1.
  • a seal made of rubber, or, for example, a transparent, heat and aging resistant silicone rubber may be arranged in the recess for the passage of the tube. Furthermore, a passage in a relatively narrow distance in the diameter to the lamp body 24 can take place. In Fig. 5 the lamp body 54 is relatively closely enclosed by the recess 50 in the partition wall 58, so for example at a distance of 1 or 2 mm. In addition, by choosing a larger distance on the favorable adjustment of the temperature difference influence can be taken.
  • Fig. 3 is a lamp 30, shown again with T16 lamp 1, according to the third embodiment, in which a cylinder-shaped partition wall 38 is provided is. Again, the lamp 1 is connected via the brackets 7 with the lamp housing 6 and has lamp filament 2a, 2b and feeders 3a and 3b.
  • a can-like arrangement is preferably provided.
  • the two end faces such as the lid and the bottom of a can, enclose the oblong gas discharge lamp 1 in the region of the cool spot 12.
  • the cool spot 12 thus including the lamp filament 2a is enclosed in a front and rear Cylinder packed.
  • the cylinder is opened directly under the cool spot and above the helix 2a.
  • the cylinder-shaped partition 38 thus has, as by arrows, which also take into account the flow of air through the cylinder and as in the Fig. 3 indicated, wall openings with an inlet 35 and an outlet 36.
  • two small fans may be arranged at the inlet 35 and at the outlet 36, respectively.
  • the fans can increase the air flow with different and / or low speed for low noise, in order to keep the cool spot well-tempered, ie within the optimal operating range. It is also conceivable to equip the cylinder-shaped partition in the upper region with a heat sink-like surface structure with radially arranged cooling vanes on the outside.
  • the cylinder-shaped partition 38 may also be thermally connected to the one holder 7, to dissipate the heat through the housing.
  • the partition can also be pushed only over the lamp body 4 of the lamp 1. It can in the sense of FIG. 5 the side wall having a recess which may be sealed so that the gas discharge lamp can be performed with a clearance or a clearance fit.
  • a plastic extrudate is suitable for the material of the cylinder 38.
  • the aforementioned is also conceivable to combine both two-piece, so to provide a lower half-shell and an upper half-shell, which can then be joined together and then form the cylinder 38.
  • the cylinder-shaped partition can also have a Peltier element in the vicinity of the cool spot in order to cool and determine this suitable and determined or directed.
  • a heat sink 44 connected to the lamp housing 6.
  • the T26 lamp 21 was used with Cool Spot 22 in the middle and the partitions 28a and 28b.
  • the aforementioned partition walls or partition walls may consist of transparent and heat-insulating material. It is understood that a T16 lamp can be used, then the arrangement of the heat sink 44 shifts to a front side of the lamp housing 6 accordingly.
  • the heat sink provided here by way of example in a version with ramifications with a low thermal resistance of a few K / W, as it is used for power semiconductors, also be integrally applied in the lamp housing. It turns out that the effect over a longer area already at a small tread depth causes a significant cooling effect, the color of the coating, the surface roughness and the depth structure also plays a role.
  • Fig. 5 is a plan view of one-piece partition 58 shown with a recess 50 for the lamp and a lamp 54, the example with two lamps. The centers of the longitudinal axes of the two lamps are perpendicular to the plane of the drawing.
  • a partition which has a transparent or at least partially transparent plastic color, in addition to the usual gradation of light transmittance, which appears constant over the surface of the partition, but also a shading, a tint or a color gradient in the partition or along the partition be provided.
  • the partition can consist of two sections.
  • the partition of the partition wall extends into upper and lower portions along a line spaced parallel to the horizontal lower boundary line 58a of partition 58 in FIG Fig. 5 ,
  • the subdivision is parallel to a connecting line passing through the centers of the longitudinal axes of the two lamps (perpendicular through the plane of the drawing of FIG Fig. 5 ) runs.
  • the recesses for the passage of the lamps 54 are then carried out starting from the aforementioned centers of the lamp longitudinal axis, for example, 1 to 5 mm apart from the lamp diameter.
  • the aforementioned sections may also be present or made separately, it being sufficient to produce only one type of section, from which the upper or lower section can be formed, if subdivision passes through the connecting line of the centers of the lamp longitudinal axis (mirror symmetry).
  • a seal may be provided.
  • the upper and / or the lower portion of the partition at the meeting end faces optionally also in the region of the semi-circular recesses in the vicinity of the passage of the lamp, be sealed, for example by applying a transparent sealing layer on one of the faces.
  • a seal may also be guided around certain areas or around the entire circumference of a section.
  • the lower and the upper portion of the partition may also be in engagement, by a kind of rectangular toothing in the end faces, in which a fit may be formed.
  • a wavy or wavy function such as a trapezoidal, triangular or sine function, may be used.
  • the partition then consists of two complementary sections with wavy faces, which are joined together.
  • the partition can be assembled so that in the final assembly step the opening is a passage for the gas discharge lamps.
  • a divider 68 having an upper portion 62 and a lower portion 66.
  • the upper section 62 forms with the lower section 66 by way of example a hexagonal recess which forms a passage opening into which the gas discharge lamp 64 is introduced.
  • the upper portion 62 may already be connected to the lamp housing and the gas discharge lamp, without this as in the case at Fig. 5 to be guided through a one-piece partition already locked in the holder.
  • the lower portion 66 can then be inserted, for example, in the upper portion 62 releasably inserted, overlapped, frictionally, positively connected, adhered or snapped.
  • the lower portion 66 may also be connected to the light exit element, which is a receptacle or a pin-like Plug connection provides. In the aforementioned case, then the lower portion 66 of the partition wall when inserting the light exit element to produce the partition.
  • FIG. 7 shows a further embodiment of the present invention, wherein the lamps are arranged on the upper side of a lamp and are therefore used to generate a so-called indirect lighting.
  • the light of two gas discharge lamps or fluorescent lamps 71 is emitted in this case to the top, so that the area of the ceiling above the lamp 70 and the surrounding area is brightened.
  • enclosing the lamps 71 with the aid of a transparent cover makes sense and is desirable, since the lamps 71 are to be protected from external influences and, in particular, the ingress of dirt and moisture is also to be prevented.
  • the two lamps 71 are disposed within a formed on the top of the lamp housing 75 recess 76 which is covered by a transparent plate 77.
  • the cover plate 77 and the housing 75 thus again enclose a space in which the lamps 71 are arranged.
  • the lamps 71 are not completely within the enclosed space.
  • the end area of the lamp 71 surrounding the cool spot is outside the enclosed space.
  • a passage opening 72 is thus provided at an end region of the enclosed space for each lamp 71, through which the lamp 71 extends such that its end region protrudes from the enclosed area.
  • the sockets 73 for mounting the lamps 71, wherein the arrangement is such that each cool spot is outside the enclosed area.
  • the passage opening can - as indicated - are formed by a corresponding plate 74, which is arranged on the front end region of the recess 76.
  • the housing 75 itself or the cover have a corresponding passage opening 77.
  • most of the lamps 71 are within an enclosed area, but the area with the cool spot is thermally separated therefrom. Since the lamps 71 are not visible to an observer of the lamp, the fact that the end portions of the lamps 71 are not within the enclosed area does not adversely affect the appearance of the lamp 70.
  • Fig. 7 illustrated embodiment which relates in particular to the realization of an indirect lighting, with the previously discussed embodiments, in which the lamps are used primarily for direct lighting, combined.
  • the transparent element is not as shown a simple disc, but instead is box-shaped and is applied to the flat top of the lamp.
  • the passage openings for the lamps are formed in a corresponding side wall of the transparent cover. It would of course be conceivable, the end wall of the cover with the through holes as in the FIGS. 5 and 6 illustrated form.
  • the present invention thus provides a simple and elegant way to promote a well-tempered operation of a gas discharge lamp, in particular a low-pressure discharge lamp.
  • the cool spot is isolated from the rest of the lamp.
  • the Temperaturabschottung by the partition wall according to the invention in the light is so good that T16 lamps can be operated even at high ambient temperatures at optimum temperatures.
  • the reliability, and beyond the increased light output, the overall efficiency, the life and the environmental impact can be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP09171381A 2008-09-26 2009-09-25 Lampe dotée d'un boîtier de lampes et d'un élément de sortie de lumière transparent Withdrawn EP2169301A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008048909A DE102008048909A1 (de) 2008-09-26 2008-09-26 Leuchte mit geschlossenem Leuchtengehäuse

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EP2169301A1 true EP2169301A1 (fr) 2010-03-31

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EP (1) EP2169301A1 (fr)
DE (1) DE102008048909A1 (fr)

Cited By (1)

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EP2312384A1 (fr) * 2008-07-09 2011-04-20 NEC Corporation Dispositif d affichage à cristaux liquides

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US6417832B1 (en) * 1999-09-28 2002-07-09 Rainbow Displays, Inc. Apparatus for producing uniform luminance in a flat-panel display backlight
WO2004017131A1 (fr) * 2002-08-15 2004-02-26 Koninklijke Philips Electronics N.V. Dispositif pour panneau lumineux, dispositif d'affichage a cristaux liquides et procede pour eclairer un dispositif d'affichage a cristaux liquides
EP1482543A2 (fr) 2000-02-09 2004-12-01 Matsushita Electric Industrial Co., Ltd. Matériau de transfert, méthode de fabrication associée et substrat d'interconnexion produit en l'utilisant l
WO2006000948A2 (fr) * 2004-06-22 2006-01-05 Koninklijke Philips Electronics N.V. Unite de retro eclairage pour afficheur presentant des systemes de refroidissement ameliore

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DE3622109A1 (de) * 1986-07-02 1988-01-07 Promat Gmbh Leuchte fuer brandgefaehrdete raeume
US6024465A (en) * 1997-10-31 2000-02-15 Toshiba Lighting & Technology Corporation Lighting fixture
DE20307607U1 (de) * 2003-05-15 2004-09-23 Zumtobel Staff Gmbh Beleuchtungsanordnung bestehend aus einer Gasentladungslampe und einer Abschirmhülse
DE102006019106A1 (de) * 2006-02-01 2007-08-02 Zumtobel Lighting Gmbh Leuchte zum Betreiben einer Gasentladungslampe bei Umgebungstemperaturen, die unter der Coolspot-Temperatur der Gasentladungslampe liegen

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Publication number Priority date Publication date Assignee Title
US6417832B1 (en) * 1999-09-28 2002-07-09 Rainbow Displays, Inc. Apparatus for producing uniform luminance in a flat-panel display backlight
EP1482543A2 (fr) 2000-02-09 2004-12-01 Matsushita Electric Industrial Co., Ltd. Matériau de transfert, méthode de fabrication associée et substrat d'interconnexion produit en l'utilisant l
WO2004017131A1 (fr) * 2002-08-15 2004-02-26 Koninklijke Philips Electronics N.V. Dispositif pour panneau lumineux, dispositif d'affichage a cristaux liquides et procede pour eclairer un dispositif d'affichage a cristaux liquides
WO2006000948A2 (fr) * 2004-06-22 2006-01-05 Koninklijke Philips Electronics N.V. Unite de retro eclairage pour afficheur presentant des systemes de refroidissement ameliore

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2312384A1 (fr) * 2008-07-09 2011-04-20 NEC Corporation Dispositif d affichage à cristaux liquides
EP2312384B1 (fr) * 2008-07-09 2014-09-10 NEC Corporation Dispositif d affichage à cristaux liquides

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