EP3321571A1 - Monoreflector surgical room light - Google Patents

Abstract

The invention relates to an op-mono reflector luminaire, comprising a thorn or hood-shaped housing upper part (18), a lamp arranged in the upper housing part, preferably designed as an LED illuminant comprising an LED board (28) on which a plurality of LEDs are arranged a main reflector (19) likewise arranged in the upper part of the housing, which deflects a luminous flux generated by the luminous means onto a visual task through a light exit opening of the upper housing part closed by a cover (22). To reduce the necessary space and simplify the structure, the invention proposes that the upper housing part is formed in one piece and uninterrupted extending from a mounting position upwardly directed upper end to a lower end defining the light exit opening, that the upper housing part on an inner side a mounting plane for Includes LED board, and that an LED light module mounted on the mounting level or mounted.

Description

The invention relates to a monoreflector operating room light (surgical light), comprising an at least partially dom- or hood or cup-shaped housing upper part with a housing upper side in the installed position and a downwardly directed housing inner side, which is preferably designed as an aluminum die-cast body an LED illuminant arranged on the inside of the inside of the housing to generate a luminous flux radiating in a primary light direction which impinges on a deflecting reflector arranged in a radiation direction in front of the LED illuminant, which in turn directs the luminous flux back to a main reflector arranged in the housing upper part, which directs the luminous flux through a closed with a cover light exit opening of the housing upper part for illuminating a Sehaufgabe.

State of the art

Monoreflector surgical lights comprising a centrally arranged illuminant with an optical system arranged in front of it in the direction of radiation offer improved depth illumination of a wound, in contrast to so-called multi-field luminaires with a plurality of light fields pivotally mounted around a middle holder and focussed on this holder the OP and therefore require less readjustment than multiple field lights.

Such a monoreflector surgical light has the advantage of particularly high depth illumination, ie a relatively high range around the maximum luminance range, in which at least 60 percent of this maximum luminance is achieved in order to repair the wound without loss of light and readjustment or surgery. To be able to illuminate the focus.

The monoreflector operating room luminaires known from the prior art comprise a domed or shell-shaped upper housing part, on the inner side of which is mounted at the upper vertex of a retaining flange, to which a light module which conically widens in the radiation direction and which is accommodated in the upper housing part and extends from the top to the bottom. This light module comprises directly attached to the retaining flange acting as a heat sink, an LED board with a plurality of grid-shaped LEDs and a LED board enclosing this, conically downwardly expanding in the direction of radiation and hollow pyramidal module housing on the inner circumferential surface a plurality of reflectors are arranged. At the lower end of the surgical light, a saddle-shaped or tapered deflecting reflector is arranged, which directs the direct incident luminous flux laterally up to the main module surrounding the light module and directs from this through the light exit opening and the cover to the visual task.

Such a light module is, for example, the ITOS SL module from OSRAM. Such a light module represents an integral complete module, which comprises in the surrounding housing at the upper end of the LED board and a plurality of reflectors. At the same time this significantly determines the height of the surgical light, because the monoreflector surgical light must be at least as large as the longitudinal direction of the module housing to accommodate this. When assembling such Monoreflektor lights first individual modules must be pre-assembled and then these modules are assembled to the surgical lights. The modules must be turned and handled several times. A first module is the lower glass ring in the installation position at the bottom with the light exit opening closing glass plate and the main reflector formed as a parabolic ring segment main reflector with an upper-side opening for insertion of the light module. A second assembly forms the upper housing part, also referred to as "hood", with the light module attached to the inside thereof. This light module is inserted into the inverted, bowl-shaped upper housing part and screwed to the retaining flange provided on the inside in the upper housing part. Then, the upper housing part is rotated together with the light module by 180 degrees and inserted from above into the upper-side opening of the main reflector, which is then inserted into the under glass ring with the recorded cover. Finally, the upper housing part and the lower glass ring are screwed together at a separation point and sealed by a seal on the outside.

A generic Monoreflector surgical light is from the DE 10 2012 201 706 A1 the applicant known. Furthermore, an LED surgical light without a deflection reflector from the DE 10 2007 042 646 A1 the applicant known. In addition, an LED lighting device from the DE 10 2009 012 138 A1 known. A generic lamp is also from the US 2010/0254128 A1 known.

Disadvantages of the prior art

The modules must be assembled so far and then connected the modules to the surgical light and aligned with each other. The individual modules must be reversed several times, which is expensive. Furthermore, the height of these known surgical lights mainly due to the light module is relatively high, so that they are relatively large and heavy.

task

Based on this prior art, the present invention seeks to at least partially avoid these disadvantages and in particular to provide a monoreflector surgical light that is more compact and easier to assemble.

invention

According to the invention, this object is essentially already achieved in a monoreflector surgical light of the type mentioned at the outset in that the upper housing part is integrally formed, which extends without interruption from an upper end to a lower end to form a closed reference system. The upper housing part has insofar on a housing inner side serving as a reference plane mounting plane for the components of the optical system. The optical system comprises at least one LED board, a front optics for directing the light generated by the at least one LED board luminous flux, and preferably also a substantially designed as a hollow cylinder aperture which surrounds the LED board and the optical attachment outside in the installed position or surrounds , The LED board, the front optics and the optional aperture are mountable as parts of the optical system on the mounting plane. In addition, several attachment points spaced from the reference plane may be provided on other attachment planes for further optical system components, in particular the main reflector , The upper housing part forms by this training a self-contained reference system, which guarantees the optically optimal alignment or arrangement of the components in the optical target position during assembly. Advantageous further developments are given in the subclaims.

The reference system is thus formed by the mounting plane, which forms the reference point of the reference system, and a plurality of spaced mounting points on other mounting levels for components of the optical system, of course, on the mounting plane components of the optical system can be attached to each other, of course the LED board, a front optics and preferably these two first components enclosing aperture.

This embodiment according to the invention has decisive advantages. On the one hand no module housing is needed, so that the space required for this space and in particular the height of the luminaire is no longer necessary, giving the design freedom in technical than also extended under design aspects. Thus, the height of the surgical light of the invention can be reduced by about a quarter to a third compared to existing monoreflector surgical lights. The aforementioned ITOS module of the prior art requires namely laterally arranged on the module housing mirror as reflection surfaces for bundling the light in the desired light direction, but requires the predefined height through the housing of the module substantially. According to the invention, this housing is no longer necessary because the collimator lenses focus the light emitted by the LEDs in the main beam direction.

Thus, the assembly of the luminaire is significantly simplified by the inventive design. Namely, only the one-piece, preferably shell-shaped luminaire housing with the luminaire housing top side downwards and the light exit opening directed upward must be placed on a base for the assembly. Then, all necessary components can be attached to the inside, based on the mounting or mounting plane, which thus serves as a reference plane for the optical system.

A particular aspect of the invention is the design of the mounting plane as a reference plane for the optical system comprising LED board, attachment optics and preferably the diaphragm and additionally also the deflection reflector, the main reflector and the cover, which the assembly and the alignment to each other to achieve an optimized optical system thus simplified and only possible by the one-piece design of the housing according to the invention, because not several housing parts in addition to the optical systems must be mounted together and aligned.

For the attachment of the diaphragm and / or the main reflector and other components of the optical system but other fastening means may be provided correspondingly spaced from the mounting plane.

These other fastening means preferably define the further fastening planes arranged at nominal distances to the mounting plane for the attachment of the main reflector and further optical components in the respective optical nominal position.

The main reflector may e.g. radially extending from the peripheral edge mounting tabs which rest on a corresponding further mounting plane and can be fastened in this optical target position, z. B. by means of screws.

This further attachment level for the main reflector can, for. B. offset against the direction of radiation upwards be formed on a lower support or mounting edge for the cover, z. B. in the form of recesses into which engage the mounting tabs of the main reflector and rest.

Fastening domes or supports for the support of the cover plate are also preferably provided, which can also be formed over an offset relative to the Lichtaustrittsebene outer edge of the housing upper part and may be further formed for attachment of the main reflector. In the preferred case, these supporting or rod-shaped and spaced attachment dome extend beyond a defined by the outer edge of the housing top level. These fastening domes preferably comprise, as part of the reference system, supports which form the further fastening plane for fastening the main reflector. Preferably, the attachment domes comprise radially inner pockets or recesses, in which radially outwardly projecting attachment tabs can be inserted into the installation position at the lower light exit end of the main reflector and can be fixed in position there.

Thus, these attachment domes can comprise receptacles designed to receive or attach the main reflector. Particularly preferably, the lower light exit end of the main reflector from the outer edge to the outside protruding mounting tabs which sit in these shots of the mounting dome and are screwed there. Thus, these recordings, which are preferably offset downwards from the mounting plane for the cover, also form a Bestanteil of the optical reference system.

The upper housing part thus extends from its preferably closed upper end to the lower open end, which defines the light exit plane, said lower end may be formed by Befestigungsdome, which protrude beyond the actual outer edge of the upper housing part, for the support of the cover.

If the upper housing part is formed in the preferred embodiment as a substantially parabolic, shell or trough-shaped body with a Scheiteilpunkt, this mounting plane is preferably formed on the inside of the housing in the region of this lobe point and thus extends transversely to the central axis of vertical axis of rotation or optical axis of the OP -Lamp.

The mounting plane is preferably formed as a cooling surface or optimized for the realization of the highest possible heat dissipation and thus caused heat absorption by acting as a heat sink upper housing part. This is done in particular by the fact that the fastening plane is not formed continuously closed area, but has a plurality of ribs, grooves and depressions, which are preferably arranged symmetrically, in particular comprising a plurality of annular concentrically concentric outwardly from a center outwardly and with their upper edges the mounting plane defining annular surfaces, each with the center of securely magnifying radius and formed therebetween recesses or open spaces. These annular surfaces thus formed can be crossed by lands, e.g. Crossing through the center extending ridges, which intersect the concentric widening circular rings. Particularly preferably, the mounting plane thus formed is formed integrally on the housing upper part.

Namely, in the prior art, the cover plate and the main reflector were mounted in an underglass ring and, therefore, were often not optimally aligned with the optical system mounted in the upper part and had to be elaborately aligned, requiring specialized personnel. In the invention On the other hand, all components are arranged in the upper part of the housing and therefore optimally optically aligned by the reference system. In the surgical light according to the invention, the underglass ring functions only for centering the cover, and is thus completely independent of the optical system of the surgical light.

Preferably, the cover has an etched surface with a special degree of gloss for the realization of a diffused light transition.

This parting plane between the cover plate and housing preferably extends in a plane along the outer, in the installed position below the arranged peripheral edge of the upper housing part, which also simplifies the assembly.

In front of the LED board, a supplementary optical system is preferably arranged which comprises at least one collimator lens and which focuses or focuses the light emitted by the associated LED into the luminous flux in accordance with the visual task to be realized.

Between the two joining partners, so the LED board on the one hand and the attachment optics on the other hand, at least one centering means are preferably provided for further simplification of the assembly. Centering means is understood to be a device which aligns the attachment optics centered in front of the LED board, so that the one or more optics, in particular designed as at least one lens, particularly preferably at least one collimator lens, is correctly arranged along the respective optical axis of the associated LED.

In the particularly preferred embodiment, in addition to the centering also Lagefixiermittel provided, ie means which in addition to the centering and the arrangement of the attachment optics in the correct mounting angle in front of the LED board ensure and fix it, so that provided on the attachment optics at least one lens along the optical Axis of an associated LED is aligned.

These centering and / or position fixing means can either be designed as additional components or, which is preferred, be provided in one piece on the joining partners (attachment optics and LED board).

This is of course of particular importance when, as is the case in the preferred embodiment, the LED board comprises a plurality of individual LEDs arranged in a regular pattern on the board, and the header optics comprises a plurality of individual lenses associated with the individual LEDs , which must therefore be aligned correctly in the installed position along the respective optical axis.

Preferred and particularly simple is the formation of the centering and / or the position fixing means as pins, which engage in openings in the respective joining partner in the installed position.

The solution according to the invention is particularly easy to assemble, because the individual components are formed self-centering by these centering and Lagefixiermittel and thus the individual components of the optical system, so arranged on mounting plane LED board, the attachment optics or lens and the aperture centering are designed for relative alignment along the optical axis, eg a centering, which the correct axial alignment, and / or an angular adjustment, which ensure the correct angular alignment of the individual components to each other during assembly and / or repair. The upper housing part thus forms a one-piece, continuous reference system, whereby particularly small tolerances in the overall system will occur, but in any case significantly lower tolerance chains than in the prior art with multiple assembled housing parts.

Preferably, the centering means comprise a centering pin formed centrally between the LED board and the attachment optics, and the position fixing means comprise a plurality of positioning pins spaced therefrom. These positioning pins realize in a lens attachment with multiple lenses, the correct fit of the individual lenses above their associated LEDs of the LED board.

A particularly good light control in the primary light or main beam direction on the deflection reflector is realized by arranging a diaphragm around the LED board and in the radiation direction superior attachment optics (lens or lens arrangement comprising a plurality of lenses, particularly preferably designed as at least one collimator lens). A particularly good avoidance of undesired lateral scattered light (not defined on reflecting surfaces striking light) is realized in that this aperture is not reflective at least on the inside. For this purpose, the panel is preferably made of a black material and in particular formed plastic injection molded part. According to the invention, the diaphragm not only serves to direct the light but is also designed to absorb scattered light by enclosing the LED circuit board and the attachment optics circumferentially. A particularly good avoidance of this scattered light is achieved by a rough formation of the material at least on the LED board facing the inside of the aperture, whereby a diffuse light scattering is realized. After all, without this diaphragm there is the small possibility of the emission of individual light beams into the main reflector, which can cause undesired light effects in the generated illumination field.

Preferably, this diaphragm is essentially designed as a hollow cylinder, which surrounds the LED board and the attachment optics in the installed position circumferentially or on the outside. Preferably, the diaphragm is designed to press the attachment optics in the installed position on the LED board. This may preferably be e.g. formed by a formed on the inside of the panel heel, edge or the like, which is geometrically adapted to rest against an outer edge of the collimator lens, so that the panel rests with this paragraph on the upper side of the outer edge of the collimator lens and thus presses against the LED board.

This diaphragm directs the generated luminous flux directed along the optical axis in the main beam direction without scattered light formation on the deflecting reflector arranged in the front direction of the beam in the beam direction. This deflecting reflector is preferably height-adjustable via a focusing unit, for example comprising a Linear transmission. The light is directed by this deflection reflector back upwards, ie opposite to the main beam direction on the annular surrounding the central vertical axis or main beam direction and recorded in the upper housing part main reflector.

This main reflector has a reflector surface adapted to the application and the visual task to be implemented, which preferably comprises a plurality of individual reflector surfaces. Particularly expediently, a preferably regularly distributed on the surface of the main reflector facet structure has proven, which may also be formed zonally different. It is also possible depending on the visual task to be implemented, the combination of zonally differently formed curvature regions and / or individual reflection surfaces, ie individual delimited by a surrounding edge reflection surfaces each having a defined curvature, which preferably directly adjacent to each other and thus form a kind of continuous honeycomb structure. It is also possible to combine a honeycomb structure with individual or spaced-apart individual reflection surfaces with other geometrically formed reflection regions, e.g. a ring structure and / or wave structure with concentrically expanding ring sections on the main reflector.

In the invention, therefore, mounted on the mounting plane at least one LED board, arranged in the direction of radiation front attachment optics and preferably these two components enclosing aperture the LED module, which is fully customizable and can be configured and configured with a height of 50 to 100 mm, in particular 68 mm has a significantly lower than existing LED modules.

A further simplification of the assembly can be achieved by providing a positional fixation between the upper housing part and the main reflector, which is an axial and / or rotational arrangement in relation to each other in accurate alignment of the main reflector to the mounting plane with the LED module and the housing allows. Preferably, these include Position fixing projections which engage in corresponding grooves. Particularly preferred are projections on the radially outer edge of the main reflector, which are insertable in recesses of the hood or the upper housing part.

A further simplification of the assembly can be realized in that between the upper housing part and the Unterglasring holding the cover an adjustment is provided during assembly, preferably comprising complementary start-up bevels, which slide during assembly or only with the respective counterpart and thus after screwing the fastening means a Realize press fit between the joining partners. Furthermore, these joining partners can be designed to fix the position of the cover plate so that they can be accurately positioned in the center and kept circumferentially.

According to the invention only the underglass ring with the upper housing part must be screwed for closing the surgical light, after all other components including the cover are mounted in or on the housing upper part serving as a reference system. During assembly so also the cover is aligned with the reference system and fixed only by the under glass ring in the desired position. This is another decisive advantage for simplifying the assembly of all components in the reference system formed by the upper housing part, which is constructed on the mounting plane acting as a reference plane so that all components can be arranged only in the optical target position. Because errors in the assembly are thus excluded, the assembly can also be carried out by untrained personnel.

For easy positioning in the optical target position and for fixing the position, the main reflector preferably has at least one positional fixing, particularly preferably comprising laterally protruding tabs which are referenced in terms of height to the mounting plane of the upper housing part. To accommodate these tabs, the upper housing part of the mounting plane defined spaced receptacles or recesses for receiving this in the installed position.

The cover which closes the light exit opening is also held in the monoreflector surgical light according to the invention by an underglass ring, which engages around the outer edge of the cover in the installed position on the underside. For this encompassing the underglass ring preferably comprises a bearing or retaining flange, which forms a bearing surface for the cover and from which extends transversely to the plane of this support surface an outer edge upwards, which is connectable to the upper housing part.

In the preferred embodiment, the underglass ring is thus formed as a lower housing part, which connects to the upper housing part on the underside and forms a harmonious unit with the upper housing part.

The separate design of the underglass ring of the housing upper part, which alone forms the reference system, allows greater design and design freedom in the design of the surgical light. The housing upper part, which also functions as a heat sink, preferably consists of metal, preferably formed as a cast aluminum body, in order to achieve a desired high heat absorption capacity. Such metal bodies must be demoldable during production, which restricts the freedom of design with regard to the formation of complex geometries, in particular those with undercuts.

This is e.g. especially important if you want to provide handles on the upper housing part, which bear the brunt. Preferably, circumferentially around the light exit plane or the lower edge of the upper housing part around several, mutually spaced handles are provided, with which the surgical light is adjustable.

The underglass ring, on the other hand, need not be made of metal, but may be e.g. Plastic or consist entirely of it, e.g. comprising a polyurethane foam. This opens up particularly wide design and cost potentials.

Between the cover plate and the support flange, a seal is preferably provided, which is particularly preferably foamed as seated in corresponding receiving grooves Include sealing elements or O-rings. In the particularly preferred embodiment, one or more radially spaced from the central axis of the lamp sealing elements are provided. At a connectable to the upper housing part upper attachment end of the outer edge of the under glass ring is preferably a tongue and groove connection provided with a further seal, so that therefore the monoreflector surgical light has two offset in height mutually arranged sealing planes, namely a first - lower - sealing plane between the cover plate and the support flange of the underglass ring and a second - upper - at the junction of the outer edge with the upper housing part. By the internal sealing surfaces a particularly simple cleaning of the lamp in the sterile operating room environment is made possible. This thus multi-stage sealing system is particularly advantageous for the realization of higher degrees of protection, in this case in particular IP54.

On the underglass ring, a position fixing means is provided for assembly simplification or correct placement of the under glass ring on the housing top and correct alignment of the cover, in particular comprising a plurality of circumferentially spaced run-off slopes, against which the outer edge of the cover so derived that upon complete placement of the underglass ring on the The invention relates to the extent independent of the Monoreflektor operating room lamp (surgical light) per se, a method for particularly efficient, so cost-effective installation of such operating room light, this assembly can be carried out in particular by untrained personnel, because the luminaire housing according to the invention a separate reference system for optically correct assembly and optically optimal alignment of the components in this reference system, ie in the optical target position, ready represents, which almost completely excludes a faulty mounting.

• Aufsetzen einer ein Referenzsystem bildendes Gehäuseoberteil umfassend eine in Einbaulage nach oben gerichtete aber in Montagelage nach unten gerichtete Gehäuseoberseite und eine in Einbaulage nach unten gerichtete und in Montagelage nach oben gerichtete Gehäuseinnenseite mit einer eine Referenzebene bildendenden Befestigungsebene auf der Gehäuseinnenseite,
• Befestigen eines LED-Leuchtmittels umfassend mindestens eine LED-Platine mit mindestens einer LED zur Erzeugung eines Lichtstroms auf der Befestigungsebene, welche als Bezugspunkt eines Referenzsystems für ein durch die Operationsraumleuchte gebildetes optisches System fungiert,
• Anordnen einer Vorsatzoptik auf dem Leuchtmittel,
• Anordnen eines Hauptreflektors, der vorzugsweise die Geometrie eines im Wesentlichen parabolisch ausgebildeten Rotationskörpers aufweist in dem Gehäuseoberteil um die LED-Platine und die Vorsatzoptik herum, und
• Anordnen einer Abdeckscheibe mit einem darin angeordneten Umlenkreflektor, der mittels eines Lineargetriebes höhenverstellbar ist zur Fokussierung der Monoreflektor-Operationsraum Leuchte, auf der Lichtaustrittsebene des Gehäuseoberteils.

This assembly process comprises at least the following process steps:

• Attaching a housing upper part forming a reference system comprising a housing upper side facing upward in installation position but facing downward in mounting position and a housing inner side facing downward in installation position and pointing upward in mounting position with a mounting plane on the inside of the housing forming a reference plane,
• Fixing an LED illuminant comprising at least one LED board with at least one LED for generating a luminous flux on the mounting plane, which serves as the reference point of a reference system for an optical system formed by the operating room luminaire,
• Arranging an optical attachment on the light source,
• Arranging a main reflector, which preferably has the geometry of a substantially parabolic rotational body in the housing upper part around the LED board and the attachment optics around, and
• Arranging a cover with a deflecting reflector arranged therein, which is height adjustable by means of a linear gear for focusing the monoreflector operating room light, on the light exit plane of the upper housing part.

In a further method section, a panel may be fastened around the LED board and the attachment optics before the main reflector is inserted, preferably likewise on or at the fastening plane. Alternatively, the attachment of the LED board of the optical attachment and the aperture at the mounting plane can be done in one step.

Finally, in a further method step, an underglass ring can be fastened to the cover plate, which has a rim which encloses the cover plate in the installation position, which edge preferably completely surrounds the cover plate. This underglass ring can also comprise inside against the outer edge of the cover acting chamfers to fix the position of the cover in the desired position. Furthermore, the Underglass ring sealant for connection to the upper housing part include, preferably a two-stage design of the sealant is realized, so a seal in two different levels to realize higher degrees of protection of IP54 and higher.

In the following detailed description, reference is made to the accompanying drawings which form a part of this specification and in which is shown by way of illustration specific embodiments with which the invention may be practiced. In this regard, directional terminology such as "top", "bottom", "front", "back", "front", "rear", etc. is used with reference to the orientations of the figure (s) described. Because components of embodiments can be positioned in a number of different orientations, the directional terminology is illustrative and is in no way limiting. It should be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description is not to be construed in a limiting sense.

As used herein, the terms "connected," "connected," and "integrated" are used to describe both a direct and indirect connection, a direct or indirect connection, and a direct or indirect integration. In the figures, identical or similar elements are provided with identical reference numerals, as far as this is expedient.

Fig. 1

einen Längsschnitt einer Monoreflektor-OP-Leuchte gemäß dem Stand der Technik;

Figur 2

einen Längsschnitt einer erfindungsgemäßen Monoreflektor-OP-Leuchte;

Figur 3

eine isometrische Explosionsdarstellung der OP-Leuchte gemäß Figur 2 in Montagestellung zur Veranschaulichung des Ablaufs des erfindungsgemäßen Montageverfahrens;

Figur 4

einen vergrößerte Ansicht der linken Hälfte der OP-Leuchte gemäß Figur 2;

Figur 5

einen perspektivischen isometrischen Längsschnitt der erfindungsgemäßen Leuchte in der Gebrauchsposition mit dem Gehäuseoberteil nach oben gerichtet; und

Figur 6

eine vergrößerte Detaildarstellung der Befestigung des Hauptreflektors im Gehäuseoberteil von oben, also in der Montageposition bei umgedrehtem Gehäuseoberteil.

Reference lines are lines connecting the reference to the part concerned. On the other hand, an arrow that does not touch any part refers to an entire entity to which it is directed. Incidentally, the figures are not necessarily to scale. To illustrate details, certain areas may be exaggerated in size. In addition, the drawings may be simplistically simplified and do not include anything in the practice possibly existing detail. The terms "top" and "bottom" refer to the illustration in the figures. Show it:

Fig. 1

a longitudinal section of a monoreflector surgical light according to the prior art;

FIG. 2

a longitudinal section of a monoreflector surgical light according to the invention;

FIG. 3

an isometric exploded view of the surgical light according to FIG. 2 in mounting position to illustrate the sequence of the assembly method according to the invention;

FIG. 4

an enlarged view of the left half of the surgical light according to FIG. 2 ;

FIG. 5

a perspective isometric longitudinal section of the lamp according to the invention in the use position with the upper housing part directed upwards; and

FIG. 6

an enlarged detail of the attachment of the main reflector in the upper housing part from above, ie in the mounting position with inverted housing top.

The FIG. 1 shows a known from the prior art Monoreflector operating room light in longitudinal section. This consists essentially of an upper housing upper part 2, a lower glass subglass 4, a substantially parabolic main reflector 6, a mounted on a heat sink 8 on the inside of the housing top 2 light module 10, a cover 12 for closing the lower light exit surface and one in this light exit surface arranged linear gear 14 on the top of a roof or saddle-shaped Umlenkreflektor 16 is arranged vertically adjustable. Laterally in the underglass ring 4, a plug-in coupling 18 is provided, with which the operating room light can be fastened to a linkage, not shown.

FIG. 2 shows a longitudinal section through a monoreflector surgical light according to the invention. This also essentially comprises a bowl-shaped or shell-shaped housing upper part 18, a annular central reflector 19 enclosing the center with the vertically extending optical axis, an underglass ring 20, a cover plate 22, and a deflecting reflector 26 which is height-adjustable via a linear gear 24 and received in the center of the cover plate 22.

The upper housing part is inventively designed as a trough-shaped, one-piece die-cast aluminum housing and comprises a housing top with an upper vertex 18.1 of which this extends under uniform curvature to the light exit surface to which the cover 22 is arranged. In the center of the cover, so aligned with the optical central axis, the linear gear 14 is attached to the tapered or saddle-shaped deflecting reflector 26 in the main beam direction of the light. On the inside of the upper housing part 18 below the apex 18.1 parallel attachment upwards to the cover 22, the mounting plane 18.2 according to the invention is formed on which an LED board 28 with a front arranged collimator lens 30 comprising a plurality of individual LEDs associated lenses and a hollow cylindrical aperture 32 attached is.

It is clearly recognizable that in the surgical light according to the invention, the upper light inlet opening of the main reflector 19 almost directly adjoins the fastening plane 18.2 or is located close to this, whereby the inventive reduction in height by a quarter to a third compared to the prior art becomes particularly clear.

The formed of black plastic injection molding as part of the molding 32 has at its upper end an inner shoulder, which abuts in the installed position against the outer edge of the collimator lens 30 and the LED board 28 and this engages together on the outside, where the panel with the mounting plane 18.2 screwed or locked is.

The FIG. 3 shows the surgical light during assembly, ie in the mounting position, ie wherein the cup-shaped housing upper part 18 on a substrate, not shown, in a holder or the like with the housing top of the housing top 18 after is arranged below and then the individual components are based on the reference plane serving as a reference plane 18.2 inserted into the upper housing part 18, wherein in the present case, the LED board 28 and the collimator lens 30 are already mounted on the mounting plane 18.2. First, during assembly, the aperture 32, the LED board 28 and the collimator lens 30 is screwed on the mounting level 18.2, then the main reflector 19 is inserted and with six equally spaced on a circle, in FIG. 3 arranged upward, but in the installed position below, outwardly projecting mounting tabs 19.1 in receptacles 18.4, which are formed on a total of six evenly spaced on the inside of the housing top on a circle and extending to the light exit opening Befestigungsdomen 18.3, used and with these Befestigungsdomen 18.3 screwed. One of these Befestigungsdome 18.3 is enlarged in the FIG. 6 shown. It can be clearly seen that this centered the receptacle 18.4, which is offset from the plane formed by the support for the cover 22 plane of the light exit surface down. The main reflector 19 has to increase the stability on a circumferentially encircling outer flange 19.2 and includes recesses so that it can be placed on the Befestigungsdome 18.3.

In the FIG. 6 is one of several of the chamfers 22.1 of the under glass ring 22 to recognize, which has a rising in the direction of extension, so conical joint surface which presses in the installed position on the outside against the outer edge of the cover 22 and thus fixed in position. Of these chamfers 22.1 spaced apart at regular intervals more on the inside of the under glass ring 20 integrally formed.

The adjustment of the light cone generated by the surgical light is effected by rotation of the centrally received in the cover plate linear gear 14, whereby the deflection reflector 26 is moved up and down. In a further development, the rotatable handle may further comprise a central camera, which is enclosed by a rotating sleeve, with which an operation can be filmed.

The subject matter of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with one another. All information and features disclosed in the documents - including the abstract - in particular the spatial design shown in the drawings are claimed as essential to the invention, as far as they are new individually or in combination with respect to the prior art.

LIST OF REFERENCE NUMBERS

2

Housing top

4

Under glass ring

6

main reflector

8th

heatsink

10

light module

12

cover plate

14

linear Heads

16

-deflector

18

Housing top

18.1

Upper vertex

18.2

mounting level

18.3

fixing dome

19

main reflector

20

Under glass ring

22.1

starting slope

22

cover plate

26

-deflector

28

LED board

30

collimator lens

32

cover

Claims (15)

Monoreflector operating room lamp, comprising an at least partially domed or hood-shaped housing upper part (18), preferably comprising aluminum, with an arranged in the upper housing part bulbs formed as LED bulbs comprising at least one LED board (28) for generating a along an optical Axis radiating luminous flux on a front in the radiation direction optical system comprising a deflection reflector (26) which is adjustable and further comprises a primary reflection surface to reflect the luminous flux on a likewise arranged in the upper housing part main reflector (19), which then the luminous flux through one of a cover (22) closed light outlet opening of the upper housing part (18) for illumination directs to a visual task , thereby marked, that the upper housing part (18) is integrally formed and uninterrupted from a mounting position upwards Upper end up to a lower end defining the light exit opening to form a self-contained reference system that the upper housing part (18) on an inner side a optical system mounting plane (18.2) serving as a reference plane, comprising at least one LED board (28) and an optical attachment (30), that the LED board (28) and the optical attachment (30) are parts of the optical system at the attachment level ( 18.2) are arranged, and that are provided from the reference plane spaced mounting points for components of the optical system. Monoreflector operating room lamp according to claim 1, characterized in that the reference system further comprises a mounting plane for the attachment of the main reflector (19). Monoreflector option room lamp according to claim 2, characterized in that the fastening plane for the main refector (19) is formed on a continuous fastening edge or circumferentially spaced fastening domes (18.3). Monoreflector operating room lamp according to claim 2 or 3, characterized in that the mounting plane is offset from the support surface for the cover (22) is formed. Monoreflector operating room lamp according to claim 1 to 3, characterized in that the LED board (28) comprises a plurality of LEDs and the lens attachment comprises a lens associated with each LED. Monoreflector operating room lamp according to claim 1 to 5, characterized in that between the LED board (28) and the optical attachment (30) at least one centering element and / or at least one position fixing are formed, with which the LED board (28) and the Attachment optics (30) in an optical target position are connected to each other. Monoreflector operating room lamp according to claim 6, characterized in that the centering and / or the Lagefixierelement comprise a pin in a first joining partner and cooperating with this pin in installation position opening in a second joining partner. Monoreflector operating room lamp according to one of the preceding claims, characterized in that the optical system comprises a substantially designed as a hollow cylinder diaphragm (32) which surrounds the at least one LED board (28) and the front optics (30) in the installed position on the outside surrounds. Monoreflector operating room lamp according to claim 8, characterized in that the diaphragm (32) is further designed to prevent stray light between the LED board (28) and the optical attachment (30). Monoreflector operating room lamp according to claim 8 or 9, characterized in that the diaphragm is designed to press the attachment optics in the installed position on the LED board. Monoreflector operating room lamp according to claim 8, characterized in that the diaphragm comprises an inside and complementary to an outer edge of the attachment optics (30) designed paragraph. Monoreflector operating room lamp according to one of the preceding claims, characterized in that the fastening plane (18.1) is designed as a heat sink. Luminaire mounting method, in particular for mounting a monoreflector operating room luminaire according to one of the preceding method claims, comprising the method steps: placing a reference system forming housing upper part (18.1) comprising a mounting position in the upward facing but in mounting position downwardly directed housing top and a mounting position downwardly directed and in mounting position upward housing inside with a mounting plane (18.2), which functions as a reference point of a reference system for an optical system, attaching a luminous means comprising an LED board (28) for generating a luminous flux radiating in a primary light direction on the mounting plane (18.2), arranging an optical attachment (30) on the LED Board, arranging a main reflector (19) in the housing upper part (18) and arranging a cover plate (22) with a deflecting reflector (26), which is height adjustable by means of a linear gear (14) for focusing the Monoreflector operating room lamp, in the housing upper part ( 18). Mounting method according to claim 13, characterized *** in that the optical system comprises a shutter which, after mounting the LED board (28) and the optical attachment (30), is mounted on the mounting plane (18.2). Mounting method according to one of the preceding method claims, characterized in that an underglass ring (20) is mounted on the cover writing (22) and the housing upper part (18).

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