Abstract
A stand for a lidded box such as a luminaire and a lighting device comprising said stand. Said stand comprising a rotatable resilient stay and comprising a bridge portion connecting two transversal portions. Each transversal portion having a respective axial portion extending over a rotation axis. Said stand further comprising two facing supports comprising a seat. The seat being elongated in a length direction transverse to the rotation axis, said length direction and rotation axis extend in a plane P. Each axial portion being accommodated in a respective axially extending hole, provided in a respective support, the respective holes and seat being positioned aligned on the rotation axis. The transversal portions having a connect portion connecting the transversal portion with its axial portion, whereby in a seated position of the stay the connect portion extends through the seat in plane P and at an angle α with the length direction, with α in a range of 25° to 75°.
Claims
1. Stand for a lighting device comprising: a resilient stay rotatable about a rotation axis and comprising a bridge portion connecting two transversal portions at a respective first end thereof, each transversal portion at a second end thereof having a respective axial portion extending over the rotation axis, two supports, at least one support comprising a seat, the seat being elongated in a length direction transverse to the rotation axis, said length direction and rotation axis are defined in a plane P, each axial portion being at least partly accommodated in a respective axially extending hole, provided in a respective support, the respective holes and seat being positioned on and aligned with the rotation axis, at least one transversal portion having a connect portion connecting the transversal portion at the second end with its axial portion, whereby in a seated position of the stay, the connect portion extends through the seat in plane P and at an angle α with the length direction, with α in a range of 25° to 75°, the stay being configured to enable disengagement of the at least one connect portion from the seat through resilient deformation of the stay for enabling rotation of the stay about the rotation axis.
2. The stand as claimed in claim 1, wherein each support comprises a respective seat.
3. The stand as claimed in claim 1, wherein each transversal portion has a respective connect portion connecting the respective transversal portion at its respective second end with its respective axial portion, whereby in a seated position of the stay, each respective connect portion rests in its respective seat of its respective support.
4. The stand as claimed in claim 3, wherein the connect portions mutually extend in mirrored direction with respect to a plane Q normal to the rotation axis.
5. The stand as claimed in claim 1, wherein the transversal portions extend substantially in a radial direction away from the rotation axis, and the connect portion extends at an angle β with respect to plane P, with 20°<=β<=160°.
6. The stand as claimed in claim 1, wherein the transversal portions are in mutually inclined orientation.
7. The stand as claimed in claim 1, wherein the stay is a shaped rod having a cross diameter Rd and the seat has a width W in a range of 1*Rd<W<=2*Rd.
8. The stand as claimed in claim 1, wherein the connect portion is positioned in the seat and the stay rests with pressing force against the support.
9. The stand as claimed in claim 1, wherein the bridge portion extends in an axial direction over a length L and the two supports are spaced apart in the axial direction by a distance >L.
10. The stand as claimed in claim 1, wherein the two supports are integrated parts in one piece.
11. The stand as claimed in claim 10, wherein the supports are die casted.
12. The stand as claimed in claim 1, wherein each seat is formed as a slot having an open side and comprising both a respective seat and hole at the open side of the slot, and wherein the open side of the slot is reversibly closeable.
13. The stand as claimed in claim 1, wherein the connect portions extend at mutually different angle β from plane P.
14. A Luminaire or Lighting device, comprising: a stand as claimed in claim 1.
15. The Luminaire or Lighting device as claimed in claim 14, wherein the luminaire comprises a housing portion which is integrally formed with the supports via die casting.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The invention will now be further elucidated by means of the schematic drawings, which are not intended to limit but rather intended to illustrate the invention, in which:
(2) FIG. 1 shows a perspective view of a luminaire according to the invention;
(3) FIG. 2 shows a side view of the luminaire of FIG. 1;
(4) FIG. 3 shows a partly worked open side view of a mounted luminaire in operation;
(5) FIG. 4A-F show a various view of a first and of a second example of a stay of a stand according to the invention;
(6) FIG. 5A-B show a perspective view of an example of supports of a stand according to the invention;
(7) FIG. 6A-C show various views of a stand according to the invention;
(8) FIG. 7A-B show a luminaire according to the invention with a stand in a first respectively in a second position.
DETAILED DESCRIPTION OF THE INVENTION
(9) FIG. 1 and FIG. 2 respectively shows a perspective view and a side view of a luminaire 1 according to the invention in an opened position. The luminaire comprises a housing 3 accommodating a light engine 5 and a cover 7 for said housing hingingly connected thereto. The luminaire further comprises a stand 9 by which the cover is kept in an open position with respect to the housing. The stand comprises two supports 11 which are (partly) integrally formed with the cover and in which a stay 13 is partly accommodated. The stay is in a first position/orientation and extends from the supports to a stopper 15 in the housing on which it rests due to the weight of the cover. The stay rests with outwardly directed pressing force, i.e. the transversal portion are urged away from each other, against the supports. Because of the fixed orientation of the stay in the supports, since the stay in its current position in the supports is blocked from rotation, the cover cannot fall down into the closed position thus rendering a safe operation possibility in the housing to people.
(10) FIG. 3 shows a partly worked open side view of a closed, street light luminaire 1 in operation, the orientation range with respect to a pole 17 (only partly shown) on which the luminaire is (to be) mounted is also shown. The luminaire has a housing 3 via which the luminaire is mounted onto a pole in a rotatable manner for enabling a correct orientation of the luminaire with respect to the target area to be illuminated, i.e. a street surface. Electric cabling, for providing electric power to the light engine of the luminaire, enters from the inside of the pole into the housing through a cable entry 19. A light engine 5, which issues a light beam 21 through a light exit window 23 of the housing, is accommodated in the housing. The light engine comprises a light source 25, for example a LED, yet in the figure a plurality of LEDs, and driver equipment 27 for driving the light source. The housing of the luminaire is closed with a cover 7 in a sealed manner yet provided with a breather 29 to enable pressure balancing of the inside of the luminaire with the ambient, thus ingress of water and dust is effectively counteracted. A stand 9 is mounted onto the cover and its stay 13 is in its second position/orientation, i.e. the stay rests against the cover, thus the stand requires only very little space in the closed luminaire.
(11) FIG. 4A shows a perspective view of an example of a resilient stay 13 of a stand according to the invention which is mirror symmetrical with respect to a plane Q normal to a rotation axis 49. The stay comprises a bridge portion 31 connecting two parallel, transversal portions 33,35 at a respective first end 37,39 thereof, each transversal portion at a second end 41,43 thereof having a respective axial portion 45,47 extending over the rotation axis 49. Each axial portion being connected to the transversal portions via a respective connect portion 51,53. The axial portions being aligned and positioned on the rotation axis. In the figure the axial portions are each provided with an optional bend end portion 55,57 for blocking the axial portions from unintentional removal from the supports during rotation form a first position/orientation to a second position/orientation of the stay in the supports. The connect portions mutually extend in mirrored direction with respect to a plane Q normal to the rotation axis, said plane Q further extending through a center 32 of the bridge portion 31.
(12) As shown in FIG. 4B, which is a side view of the stay 13 in projection along the rotation axis 49, both connect portions 51,53 extend at the same angle β from the transversal portions 33,35, in the figure for both connection portions β is 90 degrees, hence the difference in β between the two connect portions, i.e. Δβ, is 0 degrees.
(13) FIG. 4C shows a top view of the stay 13 in a direction along the parallel extending transversal portions 33,35. Here each connect portion 51,53 extends at a same angle γ with the axial direction of the rotation axis 49, be it in mirrored orientation, with γ in a range of 15° to 65° (which corresponds with angle 90−α when the stay is mounted in the supports), in the figure γ is 50 degrees.
(14) FIG. 4D-F show another example of a stay 13 according to the invention which is asymmetrical with respect to said plane Q in that the connect portions 51,53 extend in different directions from the rotation axis 49, while the transversal portions 33,35 are arranged in a mutually parallel orientation. In particular in this example the angle γ (or 90−α) between the respective connect portion and the rotation axis 49 is the same for both connect portions 51,53, (again in mutual mirrored orientation) while there is a difference Δβ between the respective angle β of each connect portion, β being the angle between the direction of the connect portion and the transversal portions, in the figure for connect portion 51 β is about 165 degrees and for connect portion 53 β is about 100 degrees. Hence, in the figure said difference Δβ is about 65 degrees. When the stay is mounted in the supports, wherein the supports have parallel extending seats, it is thus enabled that the stay can assume four different fixed positions/orientations.
(15) FIG. 5A-B show a perspective view of two examples of two facing supports 11 of a stand according to the invention. Both support comprising a respective seat 61,63, the seat being elongated in a length direction Ld transverse to the rotation axis 49, said length direction and rotation axis extend in a plane P. In FIG. 5A each seat in the length direction Ld has only one respective branch 72,74 extending along plane P, resulting in that the stay is only kept in fixed position/orientation by the seat on one side. In FIG. 5B each seat in the length direction Ld is formed as a slot between two branches 72,74 extending along plane P supporting the stay more stable on both sides in fixed orientation/position. Each of said slots has a respective open side 65,67 and comprises both a respective seat and hole 69,71 at the open side of the slot, and wherein the open side of the slot is reversibly closed by respective screw 73,75 which enables opening and closing of the seat. The two supports are integrated parts in one piece with the cover 7 and are die casted.
(16) FIG. 6A-C show a stand 9 according to the invention in an assembled configuration in different views to show the various aspects of the stand according to the invention. The stand comprises a resilient stay 13 rotatable about a rotation axis 49. The resilient stay comprises a bridge portion 31 connecting two transversal portions 33,35 at a respective first end 37,39 thereof. Each transversal portion at a second end 41,43 thereof having a respective axial portion 45,47 extending over the rotation axis. Two facing supports 11, both comprising a respective seat 61,63 wherein the seats are elongated in a length direction Ld transverse to the rotation axis, said length direction and rotation axis extend in a plane P. Each axial portion being at least partly accommodated in a respective axially extending hole 69,71, provided in a respective support and closed by a respective screw 73,75. The respective holes and seat are in an aligned position on the rotation axis. Both transversal portions having a respective connect portion 51,53 connecting the transversal portion at the respective second end with its respective axial portion. In a seated position of the stay the respective connect portions extend through the respective seat in plane P and at an angle α with the length direction, with α in a range of 30° to 60°. The connect portions mutually extend in mirrored direction with respect to a plane Q normal to the rotation axis. The transversal portions extend substantially in a radial direction away from the rotation axis, with the rotation axis extending along or in plane P, and the connect portion extends at an angle β with respect to plane P, with 45°<=β<=135°. The stay is a shaped rod having a cross diameter Rd and the seat has a width W in a range of 1*Rd<W<=2*Rd, preferably 1.1*Rd<=W<=1.5*Rd, in the figure W=1.2*Rd. The bridge portion extends in axial direction over a length L and the two supports are spaced apart in axial direction by a distance >L.
(17) FIG. 7A-B show a luminaire 1 according to the invention with a stand 9 having a stay 13 in a first A respectively in a second position/orientation B. In FIG. 7A the stay is in the first position/orientation A and rests with pressing force against the support 11 and with pressing force against an inner cover main surface 8 of the cover 7, for example caused by a small misalignment of the connection parts, i.e. one connection part is in a slightly rotated position over the rotation axis with respect to the other connection part, for example rotated over an angle δ, with δ in a range of 3 to 10 degrees, in the figure 5 degrees (not shown). Generally the stay is in this first position/orientation when the luminaire housing 3 is closed by the cover. The pressing force exerted by the stay on the supports and inner cover main surface has the positive effect that when the housing moves or vibrates, for example because of being exposed to the wind, the stay is firmly kept in position and rattle will not occur. In FIG. 7B the stay 13 is in the second position/orientation B and rests with pressing force against a stopper 15 provided in the housing, resulting in an essentially non-movable fixation of the stay in second the position/orientation, in particular when the stopper has a slight overhang, the stay can be urged with pressing force under the overhang.
