Monoreflector operating room light

Abstract

Operating room monoreflector light includes a dome or hood-shaped upper housing portion and a lighting means arranged in the upper housing portion, preferably as an LED lighting means, including an LED board on which a plurality of LEDs are arranged. A main reflector is arranged in the upper housing portion and deflects a light flux produced by the lighting means through a light exit opening closed by a cover plate of the upper housing portion. To reduce the necessary installation space and to simplify the construction, the upper housing portion is in one piece and extends interruption-free from an upper end which is directed upwardly in the installation position to a lower end which defines the light exit opening. The upper housing portion includes a fixing plane for the LED board, and on which an LED light module is or can be mounted.

Claims

1. A monoreflector operating room light for illuminating a visual task, the light comprising: an at least portion-wise dome-shaped or hood-shaped upper housing portion (18) having a light exit opening, the upper housing portion (18) being of a one-piece construction and extending interruption-free from an upper end directed upwardly in the installation position to a lower end defining the light exit opening for forming a reference system which is closed in itself, the upper housing portion (18) further including an outermost radial edge; an optical system including: at least one LED board (28) for producing a light flux radiating along an optical axis in a radiation direction, an optical fitment (30), and a deflection reflector (26) and a main reflector (10) arranged in front of the at least one LED board (28) in the radiation direction, the deflection reflector being adjustable and having a primary reflection surface in order to reflect the light flux on to the main reflector, which is also arranged in the upper housing portion, and then deflects the light flux through the light exit opening of the upper housing portion (18); a cover plate (22) closing the light exit opening of the upper housing portion; a fixing plane (18.2) on an inside of the upper housing portion (18), the LED board (28) and the optical fitment (30) being mounted on the fixing plane (18.2), which serves as a reference plane for the optical system; a plurality of fixing points spaced from the reference plane for components of the optical system; and a plurality of fixing domes (18.3) or supports on the upper housing portion that support the cover plate, the fixing domes or supports extending from the upper housing portion in the radiation direction beyond a plane defined by the outermost radial edge of the upper housing portion.

2. A monoreflector operating room light according to claim 1 wherein the at least one LED board (28) includes a plurality of LEDs and the optical fitment includes lens associated with each LED.

3. A monoreflector operating room light according to claim 2 wherein provided between the at least one LED board (28) and the optical fitment (30) is at least one centering element and/or at least one position fixing element, with which the at least one LED board (28) and the optical fitment (30) can be connected together in a target optical position.

4. A monoreflector operating room light according to claim 3 wherein the centering and/or the position fixing element includes a pin in a first joint partner and an opening cooperating with said pin the installation position in a second joint partner.

5. A monoreflector operating room light according to claim 1 wherein the optical system includes an aperture member (32) which is substantially in the form of a hollow cylinder and which encloses or surrounds the at least one LED board (28) and the optical fitment (36) on the outside in the installation position.

6. A monoreflector operating room light according to claim 5 wherein the aperture member (32) has an inside facing toward the at least one LED board (28) that is non-reflecting.

7. A monoreflector operating room light according to claim 5 wherein the aperture member is adapted to press the optical fitment on to the at least one LED board in the installation position.

8. A monoreflector operating room light according to claim 7 wherein the aperture member includes an internal step of a complementary configuration to an outer edge of the optical fitment (30).

9. A monoreflector operating room light according to claim 1 wherein the fixing plane (18.1) is in the form of a heat sink.

10. A monoreflector operating room light according to claim 1, further comprising a bottom glass ring connected to the upper housing portion.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) The foregoing summary, as well as the following detailed description of the invention, will be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there are shown in the drawings embodiments which are presently preferred. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown.

(2) In the drawings:

(3) In the Figures:

(4) FIG. 1 shows a longitudinal section of a monoreflector OR light according to the state of the art,

(5) FIG. 2 shows a longitudinal section of a monoreflector OR light according to the invention,

(6) FIG. 3 shows an isometric exploded view of the OR light shown in FIG. 2 in the assembly position to illustrate the procedure involved in the assembly method according to the invention,

(7) FIG. 4 shows a view on an enlarged scale of the left-hand half of the OR light shown in FIG. 2,

(8) FIG. 5 shows a perspective isometric longitudinal section of the light according to the invention in the position of use with the upper housing portion directed upwardly, and

(9) FIG. 6 shows an enlarged detail view of the fixing of the main reflector in the upper housing portion from above, that is to say in the assembly position with the upper housing portion turned over.

DETAILED DESCRIPTION OF THE INVENTION

(10) Accordingly FIG. 1 shows a view in longitudinal section of a monoreflector operating room light known from the state of the art. It substantially comprises an upper housing portion 2, a lower bottom glass ring 4, a substantially parabolic main reflector 6, a light module 10 fixed at a heat sink 8 on the inside of the upper housing portion 2, a cover plate 12 for closing the lower light exit surface and a linear drive 14 arranged in that light exit surface and on the top side of which a roof-shaped or saddle-shaped deflection reflector 16 is arranged adjustably in respect of height. Provided laterally in the bottom glass ring 4 is a push-in coupling 8 with which the operating room light can be fixed to a linkage rod (not shown).

(11) FIG. 2 shows a longitudinal section through a monoreflector OR light according to the invention. This also includes substantially a dish-shaped or bowl-shaped upper housing portion 18, an annular main reflector 19 which extends around the centre with the vertically extending optical axis, a bottom glass ring 20, a cover plate 22 and a deflection reflector 26 which is adjustable in height by way of a linear drive 24 and which is accommodated in the centre of the cover plate 22.

(12) According to the invention the upper housing portion is in the form of a bowl-shaped, one-piece aluminium die casting housing and includes a housing top side with an upper apex point 18.1 from which it extends with a uniform curvature to the light exit surface at which the cover plate 22 is arranged. The linear drive 14 with the deflection reflector 26 which is saddle-shaped or which tapers to a point is fixed in the centre of the cover disk, that is to say aligned with respect to the optical central axis in the main beam direction of the light. Formed at the inside of the upper housing portion 18 beneath the apex point 18.1 and displaced upwardly in parallel relationship with respect to the cover plate 22 is the fixing plane 18.2 according to the invention, on which an LED board 28 with a collimator lens 30 arranged in front thereof the including a plurality of lens associated with the individual LEDs and a hollow-cylindrical aperture member 32 is fixed.

(13) It can be clearly seen that, with the OR light according to the invention, the upper light entry opening of the main reflector 19 virtually directly adjoins the fixing plane 18.2 or is disposed close thereto whereby the reduction according to the invention in structural height by a quarter to a third is particularly apparent in comparison with the state of the art.

(14) The aperture member 32 in the form of a plastic injection moulding of black plastic has at its upper end an inner step which in the installation position bears against the outer edge of the collimator lens 30 and the LED board 28 and jointly extends around same at the outside thereof, where the aperture member is screwed or latched to the fixing plane 18.2.

(15) FIG. 3 shows the OR light upon assembly, that is to say in the assembly position, wherein therefore the bowl-shaped upper housing portion 18 is arranged on a surface (not shown), in a holder or the like, with the top side of the upper housing portion 18 facing downwardly, and then the individual components are fitted into the upper housing portion 18, building up on the fixing plane 18.2 serving as the reference plane, in which case the LED board 28 and the collimator lens 30 are already mounted on the fixing plane 18.2. In the assembly procedure firstly the aperture member 32 including the LED board 28 and the collimator lens 30 is screwed on the fixing plane 18.2, then the main reflector 19 is fitted and inserted with six outwardly projecting assembly lugs 19.1 which are spaced uniformly from each other on a circle and which in FIG. 3 are directed upwardly but which in the installation position are arranged downwardly, in receiving means 18.4 which are provided on a total of six fixing domes 18.3 which are uniformly spaced from each other on a circle at the inside of the upper housing portion and which extend to the light exit opening, and they are screwed to those fixing domes 18.3. One of those fixing domes 18.3 is shown on an enlarged scale in FIG. 6. It can be clearly seen that this centrally includes the receiving means 18.4 which is displaced downwardly from the plane of the light exit surface, that is formed by the support for the cover plate 22. To increase stability the main reflector 19 has a peripherally extending outer flange 19.2 and includes recesses so that same can be fitted on to the fixing domes 18.3.

(16) It is possible to see in FIG. 6 one of a plurality of the inclined run-on fitment surfaces 22.1 of the bottom glass ring 22, having a joining surface which rises in the fitment direction, that is to say being of a conical configuration, and which in the installation position presses at the outside against the outer edge of the cover plate 22 and thus fixes it in position. Of those portions 22.1 a plurality are integrally shaped on the inside of the bottom glass ring 20 at regular spacings from each other.

(17) Adjustment of the light cone produced by the OR light is effected by rotation of the linear drive 14 which is accommodated centrally in the cover plate, whereby the deflection reflector 26 is adjusted upwardly and downwardly. In a further development the rotatable handle may further include a central camera which is enclosed by a rotational sleeve with which an operation can be filmed.

(18) The subject-matter of the present invention arises not just from the subject-matter of the individual claims but from the combination of the individual claims with each other. All details and features disclosed in the documentsincluding the Abstract, in particular the spatial configuration shown in the drawings, are claimed as essential to the invention, insofar as they are novel individually or in combination in relation to the state of the art.

(19) It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept thereof. It is understood, therefore, that this invention is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the present invention as defined by the appended claims.