EP2863112A1 - Lampe d'opération à LED - Google Patents

Lampe d'opération à LED Download PDF

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Publication number
EP2863112A1
EP2863112A1 EP20140188873 EP14188873A EP2863112A1 EP 2863112 A1 EP2863112 A1 EP 2863112A1 EP 20140188873 EP20140188873 EP 20140188873 EP 14188873 A EP14188873 A EP 14188873A EP 2863112 A1 EP2863112 A1 EP 2863112A1
Authority
EP
European Patent Office
Prior art keywords
reflector
heat
light
surgical
optical axis
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.)
Granted
Application number
EP20140188873
Other languages
German (de)
English (en)
Other versions
EP2863112B1 (fr
Inventor
Hermann Hauschulte
Christoph Lewers
Dipl. Ing. Stefan Seltmann
Markus Bruchhage
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.)
Trilux Medical GmbH and Co KG
Original Assignee
Trilux Medical GmbH and Co KG
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Publication date
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Publication of EP2863112A1 publication Critical patent/EP2863112A1/fr
Application granted granted Critical
Publication of EP2863112B1 publication Critical patent/EP2863112B1/fr
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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
    • 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
    • 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
    • F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • 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
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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
    • 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
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/717—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements using split or remote units thermally interconnected, e.g. by thermally conductive bars or heat pipes
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • 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
    • F21V7/04—Optical design
    • F21V7/048—Optical design with facets structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/205—Lighting for medical use for operating theatres
    • 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
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • 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
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • 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
    • F21Y2105/00—Planar light sources
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the invention relates to a surgical light according to the preamble of claim 1.
  • Generic surgical lights have a luminaire housing, via which the surgical light can be mounted on an external element.
  • the luminaire housing is thus fixed in position during the stationary operation of the surgical light to the external element.
  • the luminaire housing ensures that the surgical light can be arranged in a fixed position at a specific location.
  • the luminaire housing can be movably mounted on the external element, for example via joints, so that the surgical luminaire housing can be moved to align the surgical light with the external element.
  • generic surgical lights have a light source carrier on which a plurality of light sources are arranged. It has proven to be advantageous to use LEDs and / or OLEDs and / or laser diodes as the light source, since such bulbs can emit light with a high illumination intensity, without at the same time emitting a high intensity of thermal radiation in the light emission direction. This is in particular due to the fact that the wavelength distribution of such lamps can be adjusted so that they only one low proportion of long-wave radiation, such as infrared radiation includes. Furthermore, this is particularly due to the fact that such bulbs may have a higher efficiency than conventional bulbs, such as halogen or discharge lamps, so that a higher light intensity of the radiated light can be ensured with a lower heat dissipation. The use of such bulbs is particularly advantageous for the generic surgical lights, especially as in surgical lights, a strong heat in the illuminated from the surgical light surgical field is to be avoided to avoid heating of open wounds.
  • Generic surgical lights further include a reflector having a light incident side and an optical axis and which is formed so that light incident on the light incident side of the reflector is reflected on the light incident side of the reflector and thereby focused to the optical axis becomes.
  • the light incidence side is thus at the same time the light failure side of the reflector.
  • the light source carrier is arranged, wherein the bulbs are arranged on the illuminant carrier and the illuminant carrier to the reflector so that the bulbs at least partially radiate light on the light incidence side of the reflector, in particular all of them emitted light at least in sections on the Emit the light incidence side of the reflector.
  • the light incidence side of the reflector is defined in particular by the fact that the reflector bundles light which is emitted by the illuminants on the light incidence side in the described arrangement of reflector, illuminant carrier and illuminant to the optical axis.
  • the reflector can be assigned a focus that indicates at which distance along the optical axis, viewed from its end opposite the light incidence side, the reflector focuses the light onto a specific cross section. It is obvious to the person skilled in the art that the focus of the reflector depends on the relative position of the illuminant carrier to the reflector and on the emission characteristic of the illuminant arranged on the illuminant carrier. Both the diameter and the shape of the area illuminated by the arrangement of the illuminant carrier with the illuminants and the reflector can depend on the relative position of the illuminant carrier relative to the reflector.
  • the shape and / or size of the illuminated area located at a given distance along the optical axis of the array depends on whether the illuminant carrier is spaced along the optical axis or in a direction perpendicular to the optical axis from the optical axis is arranged and of which relative position of the illuminant carrier along the optical axis to the reflector occupies, ie, at which distance the illuminant carrier from the light incident side of the reflector opposite end of the reflector is arranged.
  • the relative position of the illuminant carrier is changeable to the reflector, so that the focus of the surgical light on a change in the relative position is variable.
  • generic surgical lights of the lamp carrier is thermally conductively connected to a heat radiating element, so that heat that is produced at the bulbs, when the bulbs emit light, can be dissipated.
  • the heat dissipation is particularly important in the use of bulbs such as LEDs, OLEDs and / or laser diodes, since such bulbs produce considerable heat and their efficiency decreases with increasing temperature.
  • the lamp carrier is designed in the manner of a cylinder, on the outer lateral surface of the bulbs are arranged.
  • the light source carrier has a high thermal conductivity along its cylinder axis, so that the heat generated by the light sources can be dissipated well via the light source carrier, the light source carrier being heat-conductively connected to the heat radiating element, via which the heat is finally radiated over a large area.
  • the axis of the cylinder of the illuminant carrier is aligned along the optical axis, so that the arrangement of the illuminant carrier in the reflector as little as possible affects the generation of a radiation area which is illuminated by the reflector.
  • a conventional surgical light is in the document DE 10 2007 042 646 A1 described.
  • Corresponding generic surgical lights have the disadvantage that the homogeneous illumination of a particular illumination area through the surgical light only difficult and / or can be achieved inadequately. So that a homogeneous illumination can be achieved by such a generic surgical light, in each case separate optical elements must be assigned to the respective light sources, which is costly and expensive. Because the emission characteristics of each light source on the light incidence side of the reflector must be selectively adjusted via an associated optical element in each case so that with the surgical light comprising the combination of light source, bulbs and reflector, a region can be homogeneously illuminated. This is all the more difficult as generic surgical lights are just designed so that their focus can be changed, which makes it more difficult to provide a homogeneous illuminated area by the surgical light.
  • the invention has for its object to provide a surgical light that at least partially solves the disadvantages of generic surgical lights described above at least.
  • the invention proposes an operating theater lamp with the features of claim 1.
  • This surgical light according to the invention is characterized in that the illuminant carrier has a flat portion whose surface extends perpendicular to the optical axis of the reflector, wherein the bulbs are distributed over the surface of the planar portion.
  • the planar configuration of the illuminant carrier and the arrangement of the illuminant over the surface brings several advantages. On the one hand, this ensures that all illuminants have the same distance along the optical axis, ie measured in the direction of the optical axis, to the end of the reflector opposite the light incidence side. This makes it much easier to include a reflector through the surgical light and illuminant to provide homogeneously illuminated area. For example, this allows a much simpler design of the reflector than in conventional surgical lights, with which a homogeneously illuminated area can be provided.
  • the reflector may be bell-shaped, for example.
  • the reflector may have the shape of a plurality of tangentially intersecting curves.
  • the reflector may be faceted.
  • additional optical elements for further optimization of the area illuminated by the surgical light such as, for example, reflectors or lenses arranged on the light sources, can be made considerably simpler than in the case of generic surgical lights.
  • each illuminant is assigned to one specific optical element.
  • a very simple embodiment of such an additional, optional optical element is possible because of the simple, planar inventive design of the illuminant carrier and the uniform spacing of all bulbs along the optical axis to the light incident side opposite end of the reflector.
  • the same optical element can be provided for all lamps.
  • a light source carrier with a larger area can be realized by the planar configuration perpendicular to the optical axis of the reflector, so that a better heat dissipation over the light source carrier can be ensured to the heat radiating.
  • the invention is based on the finding that a light source carrier can be used with a planar section which runs perpendicular to the optical axis of the reflector, without adversely affecting the emission characteristic of the surgical light. From this measure has been used in conventional Surgical lamps refrained, since it was assumed that the extension of the illuminant carrier perpendicular to the optical axis must be kept as low as possible in order to ensure a good radiation characteristics of the surgical light. The inventors have just realized that this is not the case, but that the provision of a corresponding illuminant carrier brings the particular advantages described.
  • the optical axis of the reflector is determined by the fact that the surgical light, which comprises the reflector, emits light substantially in the direction of the optical axis of the reflector.
  • the optical axis of the reflector extends substantially, in particular exactly through the center of the area which the surgical light illuminates in a plane which is perpendicular to the optical axis.
  • the surgical light comprises an optical system which is arranged between the lighting means and the reflector.
  • the optical system can comprise one or more additional reflectors and / or one or more lenses, which are arranged relative to the lighting means such that the emission characteristic of the lighting means is influenced by the light incident side of the reflector.
  • the optical system can be designed so that it ensures such a light deflection of the light emitted by the bulbs light, that the light is evenly distributed to a portion of the reflector, whereby a homogeneous illumination can be ensured by the surgical light.
  • the optical system can be arranged, for example, on the illuminant carrier.
  • a homogeneous optical system in particular a be provided rotationally symmetrical optical system.
  • the optical system may be formed integrally, for example.
  • the optical system may consist of several pieces, which are arranged on the illuminant carrier juxtaposed. The optical system makes it possible to influence the emission characteristic of the surgical light, in particular to adjust it particularly advantageous.
  • the surgical light on a lens at the lying on the light incidence side of the reflector makes it possible to further influence the emission characteristics of the surgical light.
  • the lens can affect the light color of the radiated light, for example, the lens can ensure a light steering, so that the lens has influence on the geometric shape of an illuminated area of the surgical light.
  • the cover plate may for example be arranged directly on the reflector, for example, be spaced from the reflector.
  • the lighting means are as close as possible, in particular immediately adjacent, arranged side by side on the light source carrier.
  • the lighting means are arranged according to the shape of a ring through the center of which the optical axis passes, in particular according to the shape of a plurality of rings which are concentric with the optical axis as the center.
  • An appropriate arrangement of the bulbs can bring the advantage that a particularly uniform emission characteristics of the surgical light is guaranteed. This can be the case in particular if, due to the corresponding circular arrangement of the lighting means, all the lighting means are at the same distance from the light source Surface of the reflector and / or due to the annular arrangement have the same distance from the optical axis.
  • annular arrangement of the lighting means allow a particularly simple embodiment of an additional optical element, with which the emission characteristic of the surgical light can be additionally positively influenced.
  • the corresponding annular arrangement about the optical axis is particularly advantageous when the relative position of the illuminant carrier to the reflector along the optical axis is variable. For in particular then can be ensured by the annular arrangement, a particularly homogeneous radiation characteristic.
  • the annular arrangement means that the bulbs are arranged substantially annular, the annular arrangement can also be ensured by a polygonal, approximated to a ring shape arrangement, which bring the same advantages described.
  • illuminants with different light colors are provided, which are arranged homogeneously distributed on the illuminant carrier, so that a homogenous light color of the surgical illuminator over the emission area is ensured.
  • the illuminant carrier is designed as a heat-conducting element.
  • the illuminant carrier may have a heat-conducting layer, in particular a copper layer (Cu layer).
  • the heat-conducting design of a material can be realized in such a way that the material has a thermal conductivity of at least 200 W / mK at room temperature.
  • the heat-conducting materials according to the invention have a thermal conductivity of at least 350 W / mK at room temperature. This ensures a particularly good heat dissipation away from the light sources.
  • the light source carrier can have a printed circuit board on which LEDs are arranged as light sources, wherein the light source carrier has a further layer which has very good heat-conducting properties.
  • a heat-conducting layer may also consist of or comprise any other heat-conducting material, for example heat-conducting metal.
  • the heat-conducting layer can be formed like a plate on which the bulbs are arranged, for example via a circuit board. It is essential that a very good heat dissipation from the light sources to the heat radiating element is ensured by the heat-conducting layer.
  • the light source carrier is connected to a heat-conducting body, wherein the heat-conducting body is connected to the heat-radiating element in a heat-conducting manner.
  • the heat-conducting body can then also produce a heat-conducting contact between the illuminant carrier and the heat-radiating element when the illuminant carrier is far away from the heat-radiating element.
  • the provision of the heat-conducting body has the advantage that the heat-radiating element can be arranged over a large area and at an advantageous location of the surgical light that is selected for the heat radiation, without having to consider the position of the illuminant carrier within the reflector.
  • the heat-conducting body may be formed, for example, as a rigid heat pipe, which may be realized for example as a cylinder, for example as a copper cylinder.
  • a thermally conductive contact between the heat radiating element and the heat pipe and / or between the illuminant carrier and the heat pipe can be realized, for example, via a sliding contact, as a possible alternative, for example, via a cohesive contact, which can be produced for example by soldering or welding.
  • At least one of the compounds be made flexible between the heat conducting body and the illuminant carrier or between the heat conducting body and the heat radiating element in the sense that the position of the illuminant carrier can be changed to the heat radiating element while maintaining a heat-conducting contact between the illuminant carrier and the heat radiating element.
  • This can be realized, for example, by providing at least one sliding connection.
  • the extension of thedaleleit stresses parallel to the optical axis of the reflector is substantially longer than its extension perpendicular to the optical axis.
  • the corresponding ratio of said extensions may be at least 2: 1, in particular at least 5: 1.
  • the heat conducting body extends along the optical axis of symmetry of the reflector, in particular if an axis of the heat-conducting body coincides with the optical axis.
  • the plantetleit stresses can in particular also advantageous for the displaceability of the illuminant carrier along the optical axis within the reflector while maintaining a heat-conducting contact between the illuminant carrier and heat radiating be advantageous, for example via said plain bearings and / or varnishleitbandeducationen.
  • the surgical light on a heat sink, which is arranged on the heat-conducting body and which is thermally conductively connected to the heat radiating element.
  • a heat sink which is arranged on the heat-conducting body and which is thermally conductively connected to the heat radiating element.
  • the heat sink can be designed so that a heat-conducting connection between the heat-conducting body and the heat-radiating element can be realized with a large cross section, so that the thermal conductivity of the connection is increased.
  • the heat sink may be formed and arranged on the heat conducting body such that the maximum cross section of the heat conducting body is substantially smaller perpendicular to the optical axis than the maximum cross section of the arrangement consisting of heat conducting body and heat sink, in particular smaller by at least 50%.
  • the heat sink may for example have the shape of a hollow cylinder with considerable wall thickness, within which the heat conducting body is arranged.
  • a heat sink is advantageous, in particular in combination with the provision of a heat conduction band described above, since the heat conduction tape can lie over a large area on the heat sink, which is particularly advantageous for the heat conduction contact.
  • the heat conducting body substantially the removal of heat from the Light source carrier is used for heat radiating element and is not itself designed so large area that it ensures high heat radiation. Rather, the heat-conducting body just serves to dissipate heat from the light source carrier, so that the heat can be radiated at some distance from the light source and thus on the one hand, the heat of the surgical light in the illuminated area is kept low and on the other hand, the heating of the light source and thus a reduction in the efficiency of lamps on the lamp carrier is avoided.
  • the lamp carrier is rigidly connected to the heat conducting body, wherein the relative position of the heat conducting body to the reflector by a change in the position of the heat conducting relative to the surgical lamp housing is variable, while the position of the reflector remains unchanged to the surgical lamp housing.
  • a change in the position of the illuminant carrier to the reflector can be achieved by displacing the heat-conducting body relative to the OP luminaire housing.
  • the light source carrier may be connected to the heat conducting body such that no relative movement between the light source carrier and the heat conducting body is possible.
  • the heat-conducting body is movably arranged to the surgical light housing.
  • the heat-conducting body can be connected, for example via sliding bearings and / or guides with the surgical light housing.
  • Such a connection is particularly easy to implement by the heat conducting body is cylindrical and is guided in corresponding hollow cylindrical guides, which are arranged on the surgical light housing.
  • the described advantageous embodiment of the surgical light allows a particularly simple design of an operating light while ensuring a heat-conducting contact between the light source and Heat radiating element and adjusting a focus of the surgical light.
  • the relative position of the illuminant carrier is variable to the reflector via a change in the position of the reflector relative to the surgical lamp housing, while the position of the illuminant carrier remains unchanged to the surgical lamp housing.
  • This can be realized by a corresponding mounting of the reflector on the lamp housing.
  • Such an arrangement of the reflector to the surgical light housing can be realized via a corresponding guide of the reflector, in particular sliding of the reflector, the surgical light housing.
  • the change in the position of the illuminant carrier to the reflector via a change in the position of the reflector to the surgical lamp housing brings with it various advantages.
  • the illuminant carrier can remain rigidly connected to the surgical luminaire housing, while at the same time a change in the focus of the operating light is possible.
  • a particularly simple electrical contacting of the lighting means with electrical lines in the luminaire housing can be realized.
  • the reflector can be arranged because of its larger dimensions particularly easy to move to the surgical light housing, in particular easier than the light source carrier.
  • the design of an operating light is such that the relative position of the illuminant carrier relative to the reflector can be changed by changing the position of the reflector relative to the operating theater housing, while the position of the illuminant carrier can be adjusted to the operating position.
  • Luminaire housing remains unchanged, and may also be generally advantageous for generic surgical lights, which is why the invention also relates to a corresponding advantageously designed over this generic surgical light.
  • the reflector is guided over guide pins which run parallel to the optical axis.
  • the guide pins are arranged outside of the reflector, so that they do not affect the radiation characteristics of the surgical light.
  • the surgical light comprises at least one electric motor, in particular two symmetrically to the optical axis symmetrically arranged electric motors, for displacing the reflector parallel to the optical axis. The electric motor can ensure a stepless and smooth change of the relative position of the reflector to the surgical light housing.
  • the surgical light comprises a support ring, through the center of which the optical axis runs and on which the at least one electric motor is arranged.
  • the support ring is arranged outside the reflector and surrounds the reflector on its outer side, which faces away from the light incidence side.
  • the support ring does not affect the radiation characteristics of the surgical light and at the same time ensures a fixation of the electric motor to the surgical light housing.
  • the support ring is rigidly connected to the surgical light housing.
  • the electric motors can be supported via the support ring on the surgical light housing for holding the reflector and for changing the position of the reflector to the surgical light housing.
  • the reflector can be particularly easily arranged centrally within the support ring, so that the support ring allows a particularly good fixation of the reflector.
  • guide pins can be arranged on the support ring, which serve for the additional guidance of the reflector.
  • the relative position of the illuminant carrier to the reflector, in particular along the optical axis, via a change in the position of the reflector relative to the surgical lamp housing and by changing the position of the furnishedleit stresses relative to the surgical lamp housing changeable.
  • corresponding sliding connections between the illuminant carrier and the OP luminaire housing and / or between the heat conduction body and the OP luminaire housing and / or between the reflector and the OP luminaire housing can be provided.
  • the surgical light can be designed so that a change in the relative position of the illuminant carrier to the surgical lamp housing and a change in the relative position of the reflector to the surgical lamp housing can be realized simultaneously.
  • the surgical light can be designed so that said position changes can only be carried out one after the other.
  • FIG. 1a is an arrangement comprising a reflector 3, a heat radiating element 7, a light source carrier 1 with a circuit board 101, a heat conducting body 8, a plurality of LEDs 2, which are provided as a light source, a lens 9 and a group reflector 4 comprises.
  • FIG. 1a is a schematic diagram of this arrangement is shown, from which shows how in particular the light source carrier 1 with the LEDs 2 arranged thereon, the group reflector 4 and the reflector 3 cooperate.
  • FIG. 1a on the other hand, is not the assembly of the individual components that are included in the illustrated arrangement, shown in the surgical light itself.
  • the reflector 3 is rotationally symmetrical.
  • the reflector 3 has facets and is designed such that it focuses light which strikes the reflector 3 from the illuminant carrier 1 at the light incidence side in the direction of its optical axis 50.
  • the heat conducting body 8 extends along the optical axis 50 of the reflector 3.
  • the longitudinal axis of the heat conducting body 8 coincides with the optical axis 50.
  • the heat-conducting body 8 is like the reflector. 3 formed rotationally symmetrical.
  • the heat conducting body 8 is formed as a copper cylinder.
  • FIG. 1a It can be seen that the LEDs 2 are arranged on the circuit board 101 of the illuminant carrier 1 in an annular manner about the optical axis 50 of the reflector 3.
  • the illuminant carrier 1 is designed as a heat-conducting element.
  • the heat-conducting body 8 is connected to the illuminant carrier 1 and the heat-radiating element 7 such that the illuminant carrier 1 is connected to the heat-radiating element 7 in a heat-conducting manner.
  • heat can be dissipated from the illuminant carrier 1 to the heat-radiating element 7 via the heat-conducting body 8.
  • the heat radiating element 7 is arranged at the end of the reflector 3 opposite the light entry side in a large-area recess of the reflector 3 and can radiate heat particularly efficiently because of its large surface area. Thus, the heat radiation takes place so that as little heat as possible from the surgical light, in which the in FIG. 1 shown arrangement is used, illuminated area is emitted.
  • FIGS. 1a . 1b and 1c From the FIGS. 1a . 1b and 1c In particular, the interaction of LEDs 2, group reflector 4 and reflector 3 can be seen.
  • the LEDs emit light in a wide solid angle. A portion of the light emitted by the LEDs 2 passes directly to the reflective inner side, ie the light incidence side, of the reflector 3 and is deflected or focused there via the reflective facets of the reflector 3 in the direction of the optical axis 50.
  • Figure 1c is the course of the light emitted by an LED 2, exemplified.
  • both the reflector 3 and the arrangement of the LEDs 2 on the illuminant carrier 1 and the group reflector 4 have a rotational symmetry about the optical axis 50.
  • the arrangement of the lighting means and the reflector and in particular the optionally provided optical system have the same symmetry, since this can be ensured by simple measures a homogeneous radiation characteristic of the surgical light.
  • the group reflector 4 can be designed in several parts.
  • the group reflector 4 is formed in two parts and consists of two halves which are arranged around the optical axis 50 by being placed side by side.
  • the group reflector 4 describes in its cross section a curve that extends away from the optical axis 50 starting from the illuminant carrier 1 in the direction along the optical axis 50.
  • the group reflector 4 is faceted. In other embodiments, not shown, the group reflector 4 may be configured differently.
  • the group reflector 4 also contributes to this. By providing the Group reflector 4 is in particular also ensured that the heat-conducting body 8 generates no shadow in the area emitted by the surgical light area.
  • FIG. 2 is a further arrangement comprising reflector 3, light source carrier 1 with board 101, LEDs 2, heat radiating element 7 and 8 heat conducting body shown. From the in FIG. 1 The arrangement shown differs in FIG. 2 shown arrangement in that no group reflector 4 is provided. Instead, a first lens 5 is provided as the optical element, which is provided between the reflector 3 and LEDs 2, and a second lens 6, which is provided between the optical axis 50 and the LEDs 2. The interaction of the lenses 5, 6 with the LEDs 2 and the reflector 3 is off Figure 2c it can be seen, the relative arrangement of the lenses 5, 6 and the LEDs 2 is in particular made FIG. 2b seen.
  • the light beams emitted by the LEDs 2 are bundled to the optical axis 50 of the reflector 3 out.
  • the lenses 5, 6 each have same symmetry as well as the reflector 3 and as well as the arrangement of the LEDs 2. In the described embodiment, this is a rotational symmetry about the optical axis 50. This further contributes to the homogeneous illumination and the simple design of the lenses 5, 6.
  • the lenses 5, 6 are each composed of four parts in the present embodiment, which are arranged side by side so as to form a ring. In FIG. 2a two parts of the optical lenses 5, 6 are shown, which are arranged side by side and together form a semicircle.
  • FIG. 2b It can be seen that the lenses 5, 6 are each formed differently, since the lenses 5, 6 must each have a different light diffraction or refractive characteristic in order to the described and in particular in Figure 2c To achieve apparent effect with the appropriate light control of the light emitted by the LEDs light.
  • the two lenses 5, 6 are directly adjacent to each other, so that the distribution of the light emitted by the LEDs 2 and which passes from the LEDs 2 to the inside of the reflector 3, can be given particularly advantageous and comprehensive.
  • the in the FIGS. 1 and 2 The optical elements (lenses 5, 6, group reflector 4) represented in other examples can be combined individually or together with other optical elements to form an optical system.
  • the lenses 5, 6 form a lens system for ensuring the described Lichtleit characterizing.
  • the lens system has an asymmetrical refraction property in order to achieve the described and in particular in Figure 2c apparent effect with the corresponding light deflection of the emitted from the LEDs To achieve light.
  • Such a lens system comprising a plurality of, in particular two separate, in particular concentric, mutually arranged lenses 5, 6 may be particularly advantageous if between the lenses 5, 6 a plurality of LEDs along the direction of the distance between the lenses 5, 6 are provided this particular allow a particularly cost-effective design of the lens system and at the same time can ensure a comprehensive light transmission of light emitted by all LEDs at very low light intensity losses.
  • the unitary lens may then preferably alone represent the lens system having the above-described advantageous light-guiding properties.
  • the light source carrier 1 comprises a circuit board 101, on which the LEDs 2 are arranged directly, and via which the LEDs 2 are electrically contacted, and a copper plate (Cu plate 10) which is connected to the heat conducting body 8.
  • the Cu plate 10 thus represents a heat-conducting layer of the illuminant carrier 1, which ensures a very good heat conduction from the LEDs 2 to the heat-conducting body 8.
  • the light source carrier itself is designed as a heat-conducting element and ensures heat dissipation from the LEDs 2 to the heat-conducting body 8.
  • the heat-conducting body 8 is also made of copper in the present embodiment.
  • the Cu plate 10 is welded to the heat conducting body 8. Accordingly, the illuminant carrier 1 with the heat-conducting body 8 according to the embodiment according to FIG. 3 rigidly connected. Heat can be dissipated from the LEDs 2 to the heat radiating element 7 via the heat conducting body 8, which is heat-conductively connected to the heat radiating element 7. A corresponding connection between heat conducting body 8 and Cu plate 10 is in FIG. 4 shown.
  • FIG. 4 is a section of an embodiment of a surgical light according to the invention shown.
  • the light source carrier 1 is arranged directly on the heat conducting body 8.
  • the illuminant carrier 1 comprises a Cu plate 10.
  • the heat conduction body 8 is arranged along the optical axis 50 of the reflector 3.
  • the illustrated surgical light according to the invention has a hood 11 which is connected to the surgical light housing.
  • the reflector 3 is rigidly connected to the surgical light housing.
  • the reflector 3 also has a recess in which the heat radiating element 7 is provided.
  • the heat radiating element 7 is connected by a plurality of screws with the hood 11 heat-conducting. This ensures a heat radiation to the environment via the hood 11.
  • the heat radiating element 7 is thermally conductively connected to the heat conducting body 8.
  • One is a copper band (Cu band 13) is provided as a heat conduction band, which connects the heat conducting body 8 with the radiating element 7 in a thermally conductive manner.
  • the Cu-band 13 is connected via a heat sink 12 which is rigidly connected to the heat-conducting body 8, with the heat-conducting body 8.
  • heat conduction body 8, Cu band 13 and heat radiating element 7 is in relation to a change in position of the heat conducting body 8 in a direction along the optical axis 50 flexible and simultaneously heat-conducting connection between the heat radiating element 7 and heat conducting body 8 guaranteed.
  • the heat conduction body 8 having the shape of a cylinder is slidably guided in a hollow cylindrical guide provided in the heat radiating member 7.
  • the holder 23 is designed so that a stepless change in the position of the heat conducting body 8, and thus of the illuminant carrier 1, to the reflector 3 is possible. This is ensured in the present embodiment via a frictional connection of the holder 23 to the surgical light housing.
  • FIG. 5 Another common embodiment and installation situation of the holder 23, which also in the embodiment according to FIG. 4 can be used is in FIG. 5 shown.
  • group reflector 4 and lens 5 is off FIG. 4 Obvious that both a lens 5 and a group reflector 4 are provided.
  • the optical element comprising at least one lens and / or a group reflector, positionally fixed on the Leuchtmittleêt 1 to arrange, as in the embodiments in FIG. 5 and 6 the case is.
  • the position of the optical element to the bulbs is constant even with a change in the position of the illuminant carrier 1 to the reflector 3, which is advantageous for the homogeneous illumination with a corresponding change in position, and which allows a simple construction of the surgical light according to the invention.
  • FIG. 5 is a section of another embodiment of the surgical light according to the invention shown.
  • the embodiment according to FIG. 5 differs from the embodiment according to FIG. 4 in that two copper bands (Cu bands) 13 are provided so that a particularly good heat dissipation from the heat-conducting body 8 to the heat-radiating element 7 is ensured.
  • Both Cu bands 13 are identical.
  • the Cu bands 13 ensure a displacement of the heat conduction body 8 along the optical axis 50 relative to the reflector 3, wherein the Cu bands 13 are formed so that a displacement within the in FIG. 4 and FIG. 5 each shown sliding guide of the heat conducting body 8 in the heat radiating element 7 is possible.
  • the holder 23 is guided via a guide ring 14 to the cover plate 9.
  • the guide ring 14 is fixed in a fixed position on the cover plate 9.
  • the holder 23 is a rotatable handle, which is rotatably mounted in the guide ring 14.
  • the holder 23 has a thread 15 which corresponds to a thread provided in the heat conduction 8, so that a screwing along the thread 15, a change in the position of the heat conduction body 8 along the optical axis 50 to the reflector 3 can be realized.
  • the screwing can be realized via a rotation of the holder 23, which is rotatably mounted in the guide ring 14 and thus rotatably to the cover plate 9.
  • the reflector 3 is in each case rigidly connected to the hood 11 and thus to the surgical lamp housing.
  • a change in the relative position of the illuminant carrier 1 to the reflector 3 thus takes place exclusively via the holder 23, with which the position of the heat conducting body 8 relative to the reflector 3 is variable.
  • FIGS. 6 and 7 In principle representations arrangements are shown, which allow a relative change in the position of the illuminant carrier 1 to the reflector 3, characterized in that the reflector 3 relative to the surgical lamp housing changes its position, while the illuminant carrier 1 maintains its relative position to the surgical lamp housing.
  • a motor 16 is provided for this purpose, which drives a bolt 18 which has a thread.
  • the reflector 3 is designed so that it has a flange 30 which faces the outside of the reflector 3.
  • a recess is provided, in which a nut 17 is arranged.
  • FIG. 6 schematically is a cross section of an arrangement comprising motor 16, reflector 3, bolt 18 and nut 17 shown.
  • the motor 16 is anchored stationary to the surgical light housing. By the motor 16 drives the bolt 18 which rotates in the nut 17, the position of the reflector 3 can be changed to the operating light housing.
  • the change in position for example, by the interaction of a driven by the motor 16 screw with a arranged on the reflector 3 rack.
  • FIG. 7 is a detailed illustration of an arrangement shown in accordance with the FIG. 6 described principle works.
  • Figure 7a a cross section of such an arrangement is shown schematically.
  • the reflector 3 and other components are shown, which ensure the support of the reflector 3 and the mobility of the reflector 3 to the surgical light housing along the optical axis 50 of the reflector 3.
  • Other elements of an operating room light according to the invention are in Figure 7a not shown.
  • the support of the reflector 3 is ensured via a support ring 20 which is rigidly connected to the surgical light housing.
  • the support ring 20 is annular and has a rectangular cross section and is hollow inside.
  • two electric motors 16 are arranged, which are arranged symmetrically with respect to the optical axis 50 of the reflector 3 to each other.
  • the motors 16 have a flange, via which the motors are respectively attached to the support ring 20.
  • the motors 16 each have a connecting piece 19, with which the motors 16 are each connected to a bolt 18.
  • the connector 19 corresponds to the motor shaft of the associated motor 16.
  • the bolt 18 can each rotate in a nut 17 which is fixedly connected to the flange 30 of the reflector 3.
  • the guide pins 21 also contribute to this.
  • the positions of the guide pins 21 which are in Figure 7a are shown in cross section are in FIG. 7b seen.
  • the guide pins 21 are disposed on the guide pin positions 100 on the support ring 20.
  • the guide pins 21 are in the flange 30 of the reflector slidably mounted on plain bearings 22. In the plain bearings 22, the guide pins 21 can be slidably moved along the optical axis 50.
  • FIG. 7b it can be seen that for this purpose four guide pins are arranged, wherein the arrangement of the four guide pins 21 relative to the straight line, which is defined by the centers of the motor position 200, is mirror-symmetrical, with said straight line as a mirror line. This is particularly advantageous for the good guidance of the reflector 3 during a change in position of the reflector 3 along the optical axis 50. In other embodiments, not shown, an even greater number of guide pins 21 may be provided for an even better guidance of the reflector.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP14188873.5A 2013-10-15 2014-10-14 Lampe d'opération à LED Not-in-force EP2863112B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310220876 DE102013220876A1 (de) 2013-10-15 2013-10-15 LED-OP-Leuchte

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EP2863112A1 true EP2863112A1 (fr) 2015-04-22
EP2863112B1 EP2863112B1 (fr) 2018-07-11

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Cited By (3)

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ITUB20155377A1 (it) * 2015-11-09 2017-05-09 Rimsa P Longoni S R L Lampada scialitica a led, particolarmente per sale operatorie e simili.
EP3199870A3 (fr) * 2016-01-27 2017-11-08 ELPRO Lichttechnik GmbH Lampe électrique
WO2021023861A1 (fr) * 2019-08-08 2021-02-11 Sgm Light A/S Dispositif d'éclairage à commande de collimation motorisée

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DE102015006258B4 (de) * 2015-05-15 2017-01-26 Friedrich Grimm Scheinwerfer mit einem umgelenkten strahlengang

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
ITUB20155377A1 (it) * 2015-11-09 2017-05-09 Rimsa P Longoni S R L Lampada scialitica a led, particolarmente per sale operatorie e simili.
EP3165819A1 (fr) * 2015-11-09 2017-05-10 Rimsa P. Longoni S.r.l. Lampe à del scialytique, en particulier pour des salles d'opération et analogue
US10443815B2 (en) 2015-11-09 2019-10-15 Rimsa P. Longoni S.R.L. Scialytic LED lamp, particularly for operating rooms and the like
EP3199870A3 (fr) * 2016-01-27 2017-11-08 ELPRO Lichttechnik GmbH Lampe électrique
WO2021023861A1 (fr) * 2019-08-08 2021-02-11 Sgm Light A/S Dispositif d'éclairage à commande de collimation motorisée
CN114423992A (zh) * 2019-08-08 2022-04-29 Sgm照明股份公司 具有机动化准直控制的照明装置
US11959630B2 (en) 2019-08-08 2024-04-16 Sgm Light A/S Lighting device with motorised collimation control

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EP2863112B1 (fr) 2018-07-11

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