EP0396504B1 - Lighting fixture - Google Patents

Lighting fixture Download PDF

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Publication number
EP0396504B1
EP0396504B1 EP90810324A EP90810324A EP0396504B1 EP 0396504 B1 EP0396504 B1 EP 0396504B1 EP 90810324 A EP90810324 A EP 90810324A EP 90810324 A EP90810324 A EP 90810324A EP 0396504 B1 EP0396504 B1 EP 0396504B1
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EP
European Patent Office
Prior art keywords
shaped member
opening
bulb
legs
reflector bowl
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EP90810324A
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German (de)
French (fr)
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EP0396504A1 (en
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Nafa Light Kurt Maurer
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Nafa Light Kurt Maurer
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    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/104—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using feather joints, e.g. tongues and grooves, with or without friction
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing

Definitions

  • the invention relates to a lamp according to the preamble of claim 1, in particular a halogen lamp.
  • the advantage of such lights is the longer life of the light bulbs (halogen bulbs). It is achieved by cooling the bulb socket in the air passage space adjoining the annular gap.
  • the previous lights of this type (US-A-3,684,883) were equipped with a chimney or pipe (stovepipe, ventilation duct) adjoining the annular gap in order to create an air passage space according to the usual criteria of heating and ventilation technology.
  • the bulb holder was suspended in the chimney or pipe so that the air flow flowing through the annular gap into the air passage space flowed around it and was thus cooled.
  • Additional structural elements were provided to hold the reflector shell and the bulb socket, in the luminaire according to US-A-3,684,883 a cable system between a flange provided on the upper edge of the fireplace and a flange provided on the lower edge of the reflector shell.
  • the known holder structures were relatively complex.
  • the invention seeks to remedy this. It is based on the task of extending the life of the luminaires with the simplest of means.
  • the solution to the problem according to the invention is the subject of claim 1. It is based on the knowledge that a short annular gap in the region of the reflector shell base is sufficient to generate the air flow required for cooling the socket, and therefore the air passage space (in the area of the bulb socket) can be kept open on the side. This allows the simple, inexpensive construction with the U-profile part.
  • the lamp has a hemispherical reflector shell 1 made of metal with a large opening 2 obtained by separating a spherical cap or spherical cap.
  • the reflector shell 1 and the socket 3 of a halogen light bulb 4, the power supply lines of which are designated by 5, are made up of one of two U-profile parts 6 , 7 existing bracket worn.
  • the first U-profile part 6 is attached to the back of the reflector shell 1.
  • it has in its web 8 a hole adapted to the opening 2 of the reflector shell 1 and the opening edge 9 of the reflector shell 1 is flanged around the edge of the hole.
  • An elongated hole 12 running parallel to the axis 11 of the reflector shell 1 and the side edges of the legs 10 is formed in each of the two legs 10 of the first U-profile part 6 which extend to the rear.
  • the bulb socket 3 is fastened on the web 13 of the second U-profile part 7 on the side facing away from the reflector shell 1.
  • the web 13 has a through opening 14 in the center for the halogen bulb neck, the diameter of which is correspondingly large and is matched to the size of the holder 3.
  • the two legs 15 of the second U-profile part 7 are located on the inner sides of the legs 10 of the first U-profile part 6 and, depending on the outside, projecting lugs 16 engaging in the elongated holes 12 and threaded bores for engaging screws 17 through the elongated holes 12 reach through and firmly connect the U-profile part 7 to the legs 10.
  • the two legs 15 are slidably mounted in the two elongated holes 12 and can be fixed in the desired position on the edges of the elongated holes, so that the insertion depth of the halogen bulb 4 can be set in the reflector shell 1 according to requirements.
  • the lugs 16 and screws 17 are arranged axially one behind the other, which results in parallel guidance of the second U-profile part 7 when moving along the elongated holes 12 and it is ensured that the axis of the halogen bulb 4 remains in the axis 11 of the reflector shell 1.
  • the legs 10 of the first U-profile part 6 have in the vicinity of their rear ends two mutually opposite recesses 18, on which the bracket of the reflector shell 1 and socket 3 formed by the two U-profile parts 6, 7 are suspended from a suitable suspension can.
  • Retaining springs for example, can be attached to the cutouts 18, with which the holder can be arranged in a lamp frame or housing.
  • the reflector shell 1 and the two U-profile parts 6, 7 are preferably made of aluminum.
  • the hemispherical reflector shell 1 has a diameter of 60 to 65 mm.
  • a spherical cap or spherical cap is separated from it at a height of 2 to 4 mm, as a result of which the opening 2 of approximately 20 mm in diameter is formed, through which the cylindrical halogen bulb 4, which has a diameter of approximately 10 mm, projects.
  • the diameter of the opening 2 is thus about twice as large as the diameter of the (cylindrical) halogen bulb 4; the cross-section (the cross-sectional area) of the opening 2 is therefore approximately four times and the cross-section of the annular gap 21 formed between the halogen bulb 4 and the opening edge 2 of the reflector shell 1 is approximately three times the cross-section of the halogen bulb.
  • the cross section of the opening 2 could also be another multiple of the halogen bulb cross section, for example only twice or more than four times, a wide annular gap 21 being essential for cooling the socket 3 and therefore at least approximately four times being preferred.
  • the cross section of the opening 2 (that is to say the area enclosed by the edge 9) is to be selected many times larger than the largest cross-sectional area of the light bulb head part, which reaches the area of the opening 2 when the U-profile part 7 is axially displaced .
  • the socket 3 can also be arranged immovably (stationary) in the holder 6, 7, in which case the cross section of the opening 2 is at least twice, preferably at least four times as large as the cross section of the part of the light bulb located in the area of the opening is to be selected.
  • the socket 3 is carried completely freely in the center of the bracket consisting of only the two U-profile parts 6, 7 by the web 13 in the air passage space 22 formed between the two legs 10.
  • the air passage space 22, into which the wide annular gap 21 opens for the passage of air, is completely open at the top and limited only laterally by the two legs 10, and is therefore also completely open on the two sides lying in between and - since the distance between the legs 10 is greater than the diameter the opening 2 is widened radially outwards with respect to the annular gap 21.
  • the light bulb holder 3 which is carried freely in the air passage space 22, is flowed around by the air, which is heated by the light bulb 4 in the reflector space 20 and rises through the wide annular gap 21, and is thereby cooled. (If the luminaire is not directed downwards but upwards, the air flow is reversed).
  • the air heated from the base (base) of the halogen bulb or socket 3 is exchanged with the rising air. It has been shown that the base of the halogen bulb 4 in the version 3 in the arrangement described is not, or in any case not significantly above 120 ° C., despite the heating due to the heat radiation reflected by the opening from the head of the bulb 4 in the reflector shell 1 warmed up.
  • the ventilation effect and cooling is of course particularly effective and intensive when the lamp hangs vertically. A good effect is also achieved in other locations.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Liquid Crystal Substances (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Lasers (AREA)
  • Storage Of Fruits Or Vegetables (AREA)

Abstract

The tungsten-halogen lamp holder (3) of the lighting fixture is retained by a mount consisting of two U-profiled parts (6, 7) at a distance behind the reflector shell (1) that can be chosen by displacing the second U-profiled part (7). The reflector shell (1) has an opening (2) through which the tungsten-halogen lamp (4) projects into the reflector chamber (20). The cross-section of the opening (2) is a multiple of the cross-section of the tungsten-halogen lamp, so that a wide annular gap (21) for through-ventilation is free between the tungsten-halogen lamp (4) and the opening rim (9) of the reflector shell (1). In order to form a through-ventilation chamber (22), the mount (6, 7) is completely open to the rear and, moreover, on two opposite sides. The tungsten-halogen lamp holder (3) is freely retained by the mount (6, 7) in the through-ventilation chamber (22) adjoining the annular gap (21), so that the holder (3) is enveloped by the air current flowing through the annular gap (21), and the cap (base) of the tungsten-halogen lamp is cooled. The service life of the tungsten-halogen lighting fixture is thereby substantially increased. <IMAGE>

Description

Die Erfindung betrifft eine Leuchte gemäss dem Oberbegriff des Patentanspruchs 1, insbesondere eine Halogenleuchte. Der Vorteil derartiger Leuchten besteht in der längeren Lebensdauer der Glühbirnen (Halogenbirnen). Sie wird erreicht durch die Kühlung der Glühbirnenfassung im an den Ringspalt anschliessenden Luftdurchzugsraum.The invention relates to a lamp according to the preamble of claim 1, in particular a halogen lamp. The advantage of such lights is the longer life of the light bulbs (halogen bulbs). It is achieved by cooling the bulb socket in the air passage space adjoining the annular gap.

Die bisherigen Leuchten dieser Art (US-A-3,684,883) waren mit einem an den Ringspalt anschliessenden Kamin oder Rohr (Ofenrohr, Lüftungskanal) ausgerüstet, um einen Luftdurchzugsraum entsprechend den üblichen Kriterien der Heizungs- und Lüftungstechnik zu schaffen. Im Kamin bzw. Rohr war die Glühbirnenfassung aufgehängt, so dass sie vom durch den Ringspalt in den Luftdurchzugsraum strömenden Luftstrom umströmt und somit gekühlt wurde. Zur Halterung der Reflektorschale und der Glühbirnenfassung waren weitere Konstruktionselemente vorgesehen, bei der Leuchte gemäss US-A-3,684,883 ein Seilsystem zwischen einem am oberen Rand des Kamins und einem am unteren Rand der Reflektorschale vorgesehenen Flansch Die bekannten Halterungskonstruktionen waren verhältnismässig aufwendig.The previous lights of this type (US-A-3,684,883) were equipped with a chimney or pipe (stovepipe, ventilation duct) adjoining the annular gap in order to create an air passage space according to the usual criteria of heating and ventilation technology. The bulb holder was suspended in the chimney or pipe so that the air flow flowing through the annular gap into the air passage space flowed around it and was thus cooled. Additional structural elements were provided to hold the reflector shell and the bulb socket, in the luminaire according to US-A-3,684,883 a cable system between a flange provided on the upper edge of the fireplace and a flange provided on the lower edge of the reflector shell. The known holder structures were relatively complex.

Hier will die Erfindung Abhilfe schaffen. Ihr liegt die Aufgabe zugrunde, die Verlängerung der Lebensdauer der Leuchten mit einfachsten Mitteln zu erreichen.The invention seeks to remedy this. It is based on the task of extending the life of the luminaires with the simplest of means.

Die erfindungsgemässe Lösung der Aufgabe ist Gegenstand des Patentanspruchs 1. Ihr liegt die Erkenntnis zugrunde, dass ein kurzer Ringspalt im Bereich des Reflektorschalenbodens ausreicht, um die für die Kühlung der Fassung erforderliche Luftströmung zu erzeugen, und dass deshalb der Luftdurchzugsraum (im Bereich der Glühbirnenfassung) seitlich offen gehalten werden kann. Das erlaubt die einfache, preiswerte Konstruktion mit dem U-Profilteil.The solution to the problem according to the invention is the subject of claim 1. It is based on the knowledge that a short annular gap in the region of the reflector shell base is sufficient to generate the air flow required for cooling the socket, and therefore the air passage space (in the area of the bulb socket) can be kept open on the side. This allows the simple, inexpensive construction with the U-profile part.

Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher beschrieben. Es zeigen:

Fig. 1
eine Seitenansicht einer Leuchte, in Blickrichtung des Pfeils I in Fig. 3,
Fig. 2
einen Achsenlängsschnitt durch die Leuchte, entlang der Linie II-II in Figur 3,
Fig. 3
einen Achsenquerschnitt durch die Leuchte nach der Linie III-I-II in Fig. 2, und
Fig. 4
einen Achsenquerschnitt durch die Leuchte nach der Linie IV-IV in Fig. 2.
In the following an embodiment of the invention will be described with reference to the drawing. Show it:
Fig. 1
2 shows a side view of a lamp, in the direction of arrow I in FIG. 3,
Fig. 2
3 shows an axial longitudinal section through the lamp, along the line II-II in FIG. 3,
Fig. 3
an axis cross section through the lamp along the line III-I-II in Fig. 2, and
Fig. 4
an axis cross section through the lamp along the line IV-IV in Fig. 2nd

Die Leuchte hat eine halbkugelförmige Reflektorschale 1 aus Metall mit einer durch Abtrennen einer Kugelkappe oder Kalotte erhaltenen, grossen Oeffnung 2. Die Reflektorschale 1 und die Fassung 3 einer Halogenglühbirne 4, deren Stromzuführungsleitungen mit 5 bezeichnet sind, werden von einer aus zwei U-Profilteilen 6, 7 bestehenden Halterung getragen. Der erste U-Profilteil 6 ist an der Rückseite der Reflektorschale 1 befestigt. Er hat dazu in seinem Steg 8 ein der Oeffnung 2 der Reflektorschale 1 angepasstes Loch und der Oeffnungsrand 9 der Reflektorschale 1 ist um den Rand des Lochs herumgebördelt. In beiden sich nach hinten erstreckenden Schenkein 10 des ersten U-Profilteils 6 ist je ein parallel zur Achse 11 der Reflektorschale 1 und den Seitenrändern der Schenkel 10 verlaufendes Langloch 12 ausgebildet.The lamp has a hemispherical reflector shell 1 made of metal with a large opening 2 obtained by separating a spherical cap or spherical cap. The reflector shell 1 and the socket 3 of a halogen light bulb 4, the power supply lines of which are designated by 5, are made up of one of two U-profile parts 6 , 7 existing bracket worn. The first U-profile part 6 is attached to the back of the reflector shell 1. For this purpose, it has in its web 8 a hole adapted to the opening 2 of the reflector shell 1 and the opening edge 9 of the reflector shell 1 is flanged around the edge of the hole. An elongated hole 12 running parallel to the axis 11 of the reflector shell 1 and the side edges of the legs 10 is formed in each of the two legs 10 of the first U-profile part 6 which extend to the rear.

Auf dem Steg 13 des zweiten U-Profilteils 7 ist an der der Reflektorschale 1 abgewandten Seite die Glühbirnenfassung 3 befestigt. Der Steg 13 weist im Zentrum eine Durchgangsöffnung 14 für den Halogenbirnenhals auf, deren Durchmesser entsprechend gross ausgebildet und auf die Grösse der Fassung 3 abgestimmt ist. Die beiden Schenkel 15 des zweiten U-Profilteils 7 liegen an den Innenseiten der Schenkel 10 des ersten U-Profilteils 6 und weisen je nach aussen ragende, in die Langlöcher 12 eingreifende Nasen 16 sowie Gewindebohrungen zum Eingriff von Schrauben 17 auf, die durch die Langlöcher 12 hindurchgreifen und den U-Profilteil 7 fest mit den Schenkeln 10 verbinden. Mit den die Montage erleichternden und eine Führung bildenden Nasen 16 und den durch die Langlöcher 12 greifenden Schrauben 17 sind die beiden Schenkel 15 verschiebbar in den beiden Langlöchern 12 gelagert und in der gewünschten Lage an den Langlochrändern fixierbar, so dass sich die Einführtiefe der Halogenbirne 4 in die Reflektorschale 1 den Erfordernissen entsprechend einstellen lässt. Dabei sind die Nasen 16 und Schrauben 17 axial hintereinander angeordnet, wodurch eine Parallelführung des zweiten U-Profilteils 7 beim Verschieben entlang den Langlöchern 12 erreicht und sichergestellt wird, dass die Achse der Halogenbirne 4 in der Achse 11 der Reflektorschale 1 bleibt.The bulb socket 3 is fastened on the web 13 of the second U-profile part 7 on the side facing away from the reflector shell 1. The web 13 has a through opening 14 in the center for the halogen bulb neck, the diameter of which is correspondingly large and is matched to the size of the holder 3. The two legs 15 of the second U-profile part 7 are located on the inner sides of the legs 10 of the first U-profile part 6 and, depending on the outside, projecting lugs 16 engaging in the elongated holes 12 and threaded bores for engaging screws 17 through the elongated holes 12 reach through and firmly connect the U-profile part 7 to the legs 10. With the lugs 16 which facilitate assembly and form a guide and the screws 17 which extend through the elongated holes 12, the two legs 15 are slidably mounted in the two elongated holes 12 and can be fixed in the desired position on the edges of the elongated holes, so that the insertion depth of the halogen bulb 4 can be set in the reflector shell 1 according to requirements. The lugs 16 and screws 17 are arranged axially one behind the other, which results in parallel guidance of the second U-profile part 7 when moving along the elongated holes 12 and it is ensured that the axis of the halogen bulb 4 remains in the axis 11 of the reflector shell 1.

Die Schenkel 10 des ersten U-Profilteils 6 weisen in der Nähe ihrer hinteren Enden je zwei einander gegenüberliegende Aussparungen 18 auf, an denen die durch die beiden U-Profilteile 6, 7 gebildete Halterung der Reflektorschale 1 und Fassung 3 an einer geeigneten Aufhängung aufgehängt werden kann. An den Aussparungen 18 können zum Beispiel Haltefedern angebracht werden, mit denen die Halterung in einem Lampengestell oder -gehäuse angeordnet werden kann.The legs 10 of the first U-profile part 6 have in the vicinity of their rear ends two mutually opposite recesses 18, on which the bracket of the reflector shell 1 and socket 3 formed by the two U-profile parts 6, 7 are suspended from a suitable suspension can. Retaining springs, for example, can be attached to the cutouts 18, with which the holder can be arranged in a lamp frame or housing.

Die Reflektorschale 1 und die beiden U-Profilteile 6, 7 bestehen vorzugsweise aus Aluminium. Im in der Zeichnung dargestellten Ausführungsbeispiel weist die halbkugelförmige Reflektorschale 1 einen Durchmesser von 60 bis 65 mm auf. Davon ist eine Kugelkappe oder Kalotte in einer Höhe von 2 bis 4 mm abgetrennt, wodurch die Oeffnung 2 von etwa 20 mm Durchmesser ausgebildet ist, durch welche die einen Durchmesser von etwa 10 mm aufweisende, zylindrische Halogenbirne 4 hindurchragt. Der Durchmesser der Oeffnung 2 ist also etwa doppelt so gross wie der Durchmesser der (zylindrischen) Halogenbirne 4; der Querschnitt (die Querschnittsfläche) der Oeffnung 2 beträgt mithin etwa das Vierfache und der Querschnitt des zwischen der Halogenbirne 4 und dem Oeffnungsrand 2 der Reflektorschale 1 gebildeten Ringspalts 21 etwa das Dreifache des Halogenbirnenquerschnitts. Der Querschnitt der Oeffnung 2 könnte auch ein anderes Mehrfaches des Halogenbirnenquerschnitts betragen, etwa nur das 2-fache oder mehr als das Vierfache, wobei ein breiter Ringspalt 21 für die Kühlung der Fassung 3 wesentlich und deshalb mindestens etwa das Vierfache bevorzugt ist. Bei Glühbirnen mit axial gewölbtem Kopf ist der Querschnitt der Oeffnung 2 (d.h. die vom Rand 9 umschlossene Fläche) um ein Mehrfaches grösser zu wählen als der grösste Querschnittsbereich des Glühbirnenkopfteils, der beim axialen Verschieben des U-Profilteils 7 in den Bereich der Oeffnung 2 gelangt. Die Fassung 3 kann auch unverschiebbar (ortsfest) in der Halterung 6, 7 angeordnet sein, wobei in diesem Fall der Querschnitt der Oeffnung 2 mindestens doppelt, vorzugsweise mindestens viermal so gross wie der Querschnitt des im Bereich der Oeffnung befindlichen Teils der Glühbirne zu wählen ist.The reflector shell 1 and the two U-profile parts 6, 7 are preferably made of aluminum. In the exemplary embodiment shown in the drawing, the hemispherical reflector shell 1 has a diameter of 60 to 65 mm. A spherical cap or spherical cap is separated from it at a height of 2 to 4 mm, as a result of which the opening 2 of approximately 20 mm in diameter is formed, through which the cylindrical halogen bulb 4, which has a diameter of approximately 10 mm, projects. The diameter of the opening 2 is thus about twice as large as the diameter of the (cylindrical) halogen bulb 4; the cross-section (the cross-sectional area) of the opening 2 is therefore approximately four times and the cross-section of the annular gap 21 formed between the halogen bulb 4 and the opening edge 2 of the reflector shell 1 is approximately three times the cross-section of the halogen bulb. The cross section of the opening 2 could also be another multiple of the halogen bulb cross section, for example only twice or more than four times, a wide annular gap 21 being essential for cooling the socket 3 and therefore at least approximately four times being preferred. In the case of light bulbs with an axially curved head, the cross section of the opening 2 (that is to say the area enclosed by the edge 9) is to be selected many times larger than the largest cross-sectional area of the light bulb head part, which reaches the area of the opening 2 when the U-profile part 7 is axially displaced . The socket 3 can also be arranged immovably (stationary) in the holder 6, 7, in which case the cross section of the opening 2 is at least twice, preferably at least four times as large as the cross section of the part of the light bulb located in the area of the opening is to be selected.

Die Fassung 3 ist im Zentrum der nur aus den beiden U-Profilteilen 6, 7 bestehenden Halterung völlig frei durch den Steg 13 im zwischen den beiden Schenkeln 10 gebildeten Luftdurchzugsraum 22 getragen. Der Luftdurchzugsraum 22, in den der breite Ringspalt 21 für den Luftdurchzug mündet, ist oben gänzlich offen und seitlich nur durch die beiden Schenkel 10 begrenzt, an den beiden dazwischenliegenden Seiten also auch gänzlich offen und - da der Abstand der Schenkel 10 grösser als der Durchmesser der Oeffnung 2 ist - gegenüber dem Ringspalt 21 radial nach aussen erweitert.The socket 3 is carried completely freely in the center of the bracket consisting of only the two U-profile parts 6, 7 by the web 13 in the air passage space 22 formed between the two legs 10. The air passage space 22, into which the wide annular gap 21 opens for the passage of air, is completely open at the top and limited only laterally by the two legs 10, and is therefore also completely open on the two sides lying in between and - since the distance between the legs 10 is greater than the diameter the opening 2 is widened radially outwards with respect to the annular gap 21.

Die frei im Luftdurchzugsraum 22 getragene Glühbirnenfassung 3 wird durch die von der Glühbirne 4 im Reflektorraum 20 erwärmte, durch den breiten Ringspalt 21 aufsteigende Luft umströmt und dadurch gekühlt. (Wenn die Leuchte nicht nach unten sondern nach oben gerichtet ist, erfolgt der Luftdurchzug umgekehrt). Dabei findet ein Austausch der vom Sockel (Fuss) der Halogenbirne bzw. der Fassung 3 stark erhitzten Luft mit der aufsteigenden Luft statt. Es hat sich gezeigt, dass sich der in der Fassung 3 befindliche Fuss der Halogenbirne 4 bei der beschriebenen Anordnung trotz der Erwärmung durch die durch die Oeffnung zurückgestrahlte Wärmestrahlung vom in der Reflektorschale 1 befindlichen Kopf der Birne 4 nicht oder jedenfalls nicht wesentlich über 120 °C erwärmt. Die Ventilationswirkung und Kühlung ist natürlich besonders wirksam und intensiv, wenn die Leuchte vertikal hängt. Auch in anderen Lagen wird aber eine gute Wirkung erzielt.The light bulb holder 3, which is carried freely in the air passage space 22, is flowed around by the air, which is heated by the light bulb 4 in the reflector space 20 and rises through the wide annular gap 21, and is thereby cooled. (If the luminaire is not directed downwards but upwards, the air flow is reversed). The air heated from the base (base) of the halogen bulb or socket 3 is exchanged with the rising air. It has been shown that the base of the halogen bulb 4 in the version 3 in the arrangement described is not, or in any case not significantly above 120 ° C., despite the heating due to the heat radiation reflected by the opening from the head of the bulb 4 in the reflector shell 1 warmed up. The ventilation effect and cooling is of course particularly effective and intensive when the lamp hangs vertically. A good effect is also achieved in other locations.

Claims (10)

  1. A lamp, especially a halogen lamp, comprising an incandescent bulb (4), a bulb socket (3), a reflector bowl (1) and a mounting (6, 7) for the reflector bowl (1) and the bulb socket (3), in which the bulb socket (3) is held at a distance behind the reflector bowl (1) by the mounting (6, 7), the reflector bowl (1) is provided with an opening (2) through which the bulb (4) projects into the reflector area (20), an annular gap (21) is provided between the bulb (4) and the edge (9) of the opening of the reflector bowl (1) for the passage of an air stream, the mounting (6, 7) is open to form a space (22) for the passage of an air stream, and the bulb socket (3) is held by the mounting (6, 7) in the space (22) for the passage of an air stream adjacent the annular gap (21), so that the air stream flowing through said space (22) flows around the bulb socket (3) and thus cools it, characterized in that the mounting comprises a U-shaped member engaging the outer side of the reflector bowl and carrying the bulb socket, the space for the passage of an air stream being completely open at the side except for the legs of the U-shaped member, and the cross-section of the opening (2) being a multiple of the cross-section of the bulb.
  2. The lamp according to claim 1, characterized in that the space (22) for the passage of an air stream formed in the mounting (6, 7) is flared with respect to the annular gap (21) and is completely open both in upward direction and at two opposite sides.
  3. The lamp according to claim 1 or claim 2, characterized in that the diameter of the opening (2) of the reflector bowl (1) is at least approximately twice the diameter of the bulb (4).
  4. The lamp according to any one of claims 1 to 3, characterized in that the mounting (6, 7) consists of a first U-shaped member (6) and a carrier (7) arranged between the legs (10) thereof for the bulb socket (3), the first U-shaped member (6) being mounted to the rear side of the reflector bowl (1) by its web (8) and having a hole that is in alignment with the opening (2) of the reflector bowl (1).
  5. The lamp according to claim 4, characterized in that an oblong hole (12) extending parallelly to the axis (11) of the reflector bowl (1) is provided in each leg (10) of the first U-shaped member (6), and that the carrier (7) for the bulb socket (3) is arranged alongside the two oblong holes (12) so as to be movable and is adapted to be fixed in the respective position on the edges of the oblong holes.
  6. The lamp according to claim 5, characterized in that the carrier is a second U-shaped member (7) whose legs (15) are located at the inner sides of the legs (10) of the first U-shaped member (6) and are adapted to be fixed to the edges of the oblong holes by means of screws (17) extending through the oblong holes (12).
  7. The lamp according to any one of claims 1 to 3, characterized in that the mounting consists of two U-shaped members (6, 7) only, whose first U-shaped member (6) is fastened to the rear side of the reflector bowl (1) through its web (8) and whose second U-shaped member (7) is held by its two legs (15) on the inner side of the legs (10) of the first U-shaped member (6), the web (8) of the first U-shaped member (6) having a hole adapted to the opening (2) of the reflector bowl (1), and the web (13) of the second U-shaped member (7) carrying the bulb socket (3).
  8. The lamp according to claim 6 or claim 7, characterized in that the legs (15) of the second U-shaped member (7) are provided with outwardly projecting lugs (16) engaging into the oblong holes (12).
  9. The lamp according to any one of claims 4 to 8, characterized in that the edge (9) of the opening of the reflector bowl (1) consisting of metal is beaded about the edge of the hole provided in the web (8) of the first U-shaped member (6).
  10. The lamp according to any one of claims 4 to 9, characterized in that the legs (10) of the first U-shaped member (6) are provided with two oppositely located recesses (18) each for the suspension of the mounting (6, 7).
EP90810324A 1989-05-02 1990-04-25 Lighting fixture Expired - Lifetime EP0396504B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8905535U 1989-05-02
DE8905535U DE8905535U1 (en) 1989-05-02 1989-05-02 Hemispherical metal reflector bowl for halogen lamps

Publications (2)

Publication Number Publication Date
EP0396504A1 EP0396504A1 (en) 1990-11-07
EP0396504B1 true EP0396504B1 (en) 1994-12-07

Family

ID=6838884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810324A Expired - Lifetime EP0396504B1 (en) 1989-05-02 1990-04-25 Lighting fixture

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US (1) US5032966A (en)
EP (1) EP0396504B1 (en)
JP (1) JPH03149702A (en)
AT (1) ATE115258T1 (en)
CA (1) CA2015878A1 (en)
DE (3) DE8905535U1 (en)
DK (1) DK0396504T3 (en)
ES (1) ES2065513T3 (en)
GR (1) GR3015325T3 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207733A1 (en) * 1992-03-11 1993-09-16 Zumtobel Licht FOCAL ADJUSTMENT OF A LAMP IN A HOUSING
DE4323991C2 (en) * 1993-07-17 2002-07-18 Bosch Gmbh Robert Motor vehicle headlights with a reflector and at least one light source inserted into the reflector
US5622418A (en) * 1994-03-29 1997-04-22 Mitsubishi Denki Kabuskiki Kaisha Projection display device
US5707140A (en) * 1995-03-28 1998-01-13 Chen; Wen-Tsung Structure of lamp shade for halogen lamps
AT3839U1 (en) * 1999-04-07 2000-08-25 Zizala Lichtsysteme Gmbh CAR HEADLIGHTS
JP2001260965A (en) * 2000-03-17 2001-09-26 Honda Motor Co Ltd Vehicle having transparent or semitransparent body cover
FR2843442B1 (en) * 2002-08-08 2004-11-26 Valeo Vision REFLECTIVE DEVICE FOR A MOTOR VEHICLE PROJECTOR
US20070147095A1 (en) * 2005-11-22 2007-06-28 Rajiam Pursifull Light reflector socket device
US7625105B1 (en) * 2007-09-18 2009-12-01 Genlyte Thomas Group, Llc Relamping cartridge assembly
ITMI20090479A1 (en) * 2009-03-26 2010-09-27 Fivep S P A LIGHTING ENVELOPE BOX
CN103185232B (en) * 2011-12-29 2015-07-08 海洋王照明科技股份有限公司 Tube light

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Publication number Priority date Publication date Assignee Title
US1637786A (en) * 1926-02-15 1927-08-02 Luxe Lamp Mfg Co De Incandescent-lamp structure
US1825641A (en) * 1927-10-15 1931-09-29 John M Cole Socket support for lighting fixtures
US2095353A (en) * 1936-05-16 1937-10-12 Arthur H White Lighting fixture
US2673287A (en) * 1950-05-12 1954-03-23 Wheeler Reflector Company Multiple street lighting fixture having an adjustable socket support
US3688103A (en) * 1969-12-12 1972-08-29 Bosch Gmbh Robert Vehicle headlight
US3694649A (en) * 1970-07-22 1972-09-26 Gen Electric Lamp support device
US3703635A (en) * 1970-09-08 1972-11-21 E Systems Inc Zoom light
US3684883A (en) * 1970-09-24 1972-08-15 Olive Entwistle Lamphead for tungsten-halogen lamps
US3711702A (en) * 1970-11-02 1973-01-16 T Adra Heavy duty floodlight
US3843879A (en) * 1973-02-12 1974-10-22 Christie Electric Corp Cooling system for xenon arc lamps
US4363086A (en) * 1977-10-05 1982-12-07 General Electric Company Luminaire

Also Published As

Publication number Publication date
ES2065513T3 (en) 1995-02-16
DE9007795U1 (en) 1996-05-23
ATE115258T1 (en) 1994-12-15
CA2015878A1 (en) 1990-11-02
GR3015325T3 (en) 1995-06-30
DE8905535U1 (en) 1989-06-29
EP0396504A1 (en) 1990-11-07
DE59007905D1 (en) 1995-01-19
JPH03149702A (en) 1991-06-26
DK0396504T3 (en) 1995-04-24
US5032966A (en) 1991-07-16

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