Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S8/00—Lighting devices intended for fixed installation
  • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S8/00—Lighting devices intended for fixed installation
  • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
  • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• • 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
  • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
  • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
  • F21V21/04—Recessed bases
  • F21V21/049—Mounting arrangements for attaching lighting devices to the ceiling, the lighting devices being recessed in a false or stretched ceiling

Definitions

• the present invention relates to an adjustable mounting device for a spotlight intended to equip a false ceiling made of a stretched flexible material, such as for example a sheet of synthetic material or fabric to mask a real underlying ceiling, this device comprising a first U-shaped bracket fixed to the real ceiling or on a suitable support, a second inverted U-shaped bracket fixed to the first by means of clamping screws engaged in oblong slots made in the lateral branches of at least one of the two brackets, the second stirrup being adjustable in height with respect to the first stirrup and pivoting with respect to the latter about an axis passing through the two clamping screws, and a support for carrying said spot.
• a first U-shaped bracket fixed to the real ceiling or on a suitable support
• a second inverted U-shaped bracket fixed to the first by means of clamping screws engaged in oblong slots made in the lateral branches of at least one of the two brackets
• the second stirrup being adjustable in height with respect to the first stirrup and pivoting with respect to the latter about an
• stretch ceilings allow the level to be lowered, especially in old buildings with high ceilings.
• the ceiling generally receives the lighting elements mainly constituted by spotlights. These spots must be fixed on the real ceiling and their lower face must be positioned at the level of the stretch ceiling. It is imperative on the one hand to be able to align the spots relative to the stretch ceiling and on the other hand to align them between them so that they are well in line. These different alignments cannot be done effectively in the building, given the nature of the spot support. Any fixing must have a possibility of adjustment to allow a perfect alignment.
• Patent FR-2 587 7 by the same holder, describes a spot chair only allowing the positioning of the spot along a vertical axis, the adjustment being difficult to carry out after the installation of the false
• the present invention proposes to overcome these drawbacks by providing an adjustable mounting device for a spot, which is simple, compact, light, non-combustible and easy to use, designed to be adjusted before and after the false ceiling is installed, so as to position the spot in a perfect way, vertically, transversely and longitudinally and to align it with other spots, in case a line of spots is provided.
• the adjustable mounting device for a spot, object of the present invention and defined in the preamble is characterized in that said support comprises a third U-shaped bracket made integral with the second bracket by means of a locking bolt and a sliding cradle between the lateral branches of said third stirrup and adjustable in height relative to the latter.
• the third stirrup is arranged to pivot relative to the second stirrup about the axis of the locking bolt, this bolt being engaged in an oblong slot formed in the transverse part connecting the lateral branches of the second stirrup.
• the third stirrup is arranged to move transversely and longitudinally relative to the second stirrup along the axis defined by said slot.
• the cradle is mounted on the lateral branches of the third stirrup by means of clamping screws engaged in oblong slots made on said cradle.
• the cradle is mounted on the lateral branches of the third stirrup by means of clamping screws engaged in oblong slots made in the lateral branches of said third stirrup.
• the cradle is mounted on the lateral branches of the third stirrup by means of at least one adjustment screw secured to the cradle and engaged in a threaded bore or a captive nut of the transverse branch of said third stirrup.
• the cradle advantageously comprises a fourth U-shaped stirrup and an annular part fixed to the free ends of the lateral branches of said stirrup.
• the cradle is arranged to receive a spot fixed to said fourth stirrup by a fixing device of the bayonet type.
• the spot has at its base at least two rings made of a thermal and electrical insulating material, intended to be arranged on either side of the stretched flexible material constituting said false ceiling in an annular zone surrounding said spot.
• the cradle is a spot support comprising two L-shaped lateral branches fixed on a base plate, said base plate being arranged to receive a spot whatever its type and dimensions.
• the first stirrup advantageously comprises, in its transverse part connecting its two lateral branches, in contact with the real ceiling or an adequate support, an oblong slot cooperating with at least one clamping screw to allow adjustment in position of said stirrup relative to the clamping screw.
• the third bracket and the cradle respectively comprise a first profile and a second profile arranged to be complementary, so as to ensure axial guidance of one relative to the other.
• FIG. 1 represents an exploded view of the adjustable mounting device for a spot, according to the invention
• FIG. 2 represents a sectional view of the device on site
• FIG. 3 shows a view of a variant of the device.
• the adjustable mounting device of a spot first comprises a first U-shaped bracket 1 intended to be fixed to the real ceiling by means of at least one screw 2 which is engaged at through an oblong slot 3.
• This stirrup 1 consists of two lateral branches and 5 and of a transverse part 6 in which said oblong slot is formed 3.
• the lateral branches are advantageously equipped with two axial oblong slots 4 'and 5 '.
• H then comprises a second bracket 7 in the form of an inverted U, that is to say positioned in the opposite direction relative to the first and fixed to the first by two clamping screws 8 engaged in the oblong slots 4 'and 5'.
• This stirrup 7 consists of two lateral branches 9 and 10 and of a transverse part 11 in which an oblong slot is formed 12.
• the lateral branches are advantageously equipped with two axial slots 9 'and 10'.
• Said device also comprises a third U-shaped bracket 13 fixed to the second bracket 7 by a locking bolt 14 engaged in the oblong slot 12.
• This third bracket 13 consists of two lateral branches 15 and 16 and a transverse part 17 in which are formed a central bore 18 for the passage of the locking bolt 14 and two tapped holes 19 and 20 on either side of the central bore 18.
• the two lateral branches 15 and 16 preferably have a non-planar profile .
• This cradle 21 cooperates with the third yoke 13 by means of two screws 27 and 28 screwed into the tapped holes 19 and 20.
• the transverse part 25 In the transverse part 25 are formed a central bore 29 of a diameter greater than the central bore 18 and two smooth holes 30 and 31 in correspondence with the two tapped holes 19 and 20.
• the two screws 27 and 28 each have a circlip trapping the transverse part 25.
• the lateral branches 23 and 24 preferably have a non-planar profile, complementary to the profile of the lateral branches 15 and 16.
• a spot 32 is mounted in the cradle 21 by means of a bayonet type fixing device comprising two pins 33 and 34 provided in the lateral branches 23 and 24.
• Two thermally and electrically insulating washers 35 and 36 are arranged in superposi ⁇ tion on the annular part 26.
• the first 35 is for example made of Kiingerite and the second 36 is preferably made of rigid synthetic material such as PVC.
• the spot 32 can be a commercially available spot provided with a support 37, and a pivoting inner ring 38 receiving the bulb 39.
• the variant is located at the spot support element which is no longer a cradle 21, but an element called spot chair 61 fixed to a third U-shaped stirrup 53, by means of two clamping screws 56 engaged in oblong slots 54 'and 55- formed in lateral branches 54 and 55 of said stirrup.
• This spot chair consists of a base plate 62 in which is formed a central opening 63 intended to receive a spot and two lateral branches 64 and 65 in the shape of an L, fixed on one side to the base plate 62 by means of two screws 66 and 67, and on the other side to the lateral branches 54 and 55, the clamping screws passing through holes 64 'and 65'.
• the first bracket I is fixed to the real ceiling by the screw 2 after having been positioned by transverse displacement along the axis of the oblong slot 3 and in rotation around the screw 2.
• the second bracket 7 is then mounted in the first bracket 1 and fixed by the two clamping screws 8 passing through oblong slots 4 'and 9' respectively, and, 5 'and 10', after having been adjusted in height according to the axis defined by the oblong slots 4 'and 5', and in rotation along the axis defined by the two screws. It is possible to replace the oblong slots 9 'and 10' provided in retrier 7 with smooth holes.
• a provisional height can be adapted between the real ceiling and the base of the second stirrup 7 formed by its transverse part II, this height being between once and twice the length of an oblong slot.
• the third bracket 13 is then fixed to the second bracket 7 by means of the locking bolt 14 passing through the bore 18 and the oblong slot 12. It is adjustable relative to the bracket 7 transversely along the axis of the oblong slot 12 and in rotation around the bolt 14.
• This bolt is preferably of the Japy type so as to prevent any rotation of the bolt screw in the slot 12.
• the nut of said bolt is tightened by a tube wrench passing through the bore 29 provided in the cradle 21.
• the cradle 21 is slidably engaged in the third bracket 13, the two screws 27 and 28 integral with the cradle being screwed in the threaded holes 19 and 20 provided in the bracket 13.
• the screws are actuated by a pipe wrench passing through the location of the spot provided in the cradle 21.
• the adjustments in position of the third stirrup 13 and the cradle 21 are carried out by means of bolts and screws accessible through the hole provided in the false ceiling for the spot, it is possible to adjust as closely as possible the axis of the cradle receiving the spot with the axis of said hole so that they overlap, and the height of said cradle so that the front face of the spot is at the level from the false ceiling.
• the spot 32 is then mounted in the cradle 21 by through at least two insulating washers 35 and 36, the false ceiling passing between these " two washers, and being held by the two pins 33.
• the bulb 39 is mounted in the pivoting inner ring 38 by a circlip not shown This ring leaves a circular air passage allowing automatic ventilation of the bulb.
• This bulb 39 is powered by an electric wire leaving the real ceiling and passing either through or next to said adjustable mounting device of the spot.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Lighting Device Outwards From Vehicle And Optical Signal (AREA)
• Fastening Of Light Sources Or Lamp Holders (AREA)
• Load-Engaging Elements For Cranes (AREA)
• Preliminary Treatment Of Fibers (AREA)
• Vehicle Body Suspensions (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9414564

Family Applications (1)

Country Status (6)

Cited By (7)

Families Citing this family (12)

Citations (3)

Family Cites Families (1)

• 1991
  • 1991-06-27 FR FR9108198A patent/FR2678354B1/fr not_active Expired - Fee Related
• 1992
  • 1992-06-26 EP EP92914499A patent/EP0562057B1/de not_active Expired - Lifetime
  • 1992-06-26 JP JP5501379A patent/JPH06500892A/ja active Pending
  • 1992-06-26 WO PCT/FR1992/000604 patent/WO1993000552A1/fr active IP Right Grant
  • 1992-06-26 AT AT92914499T patent/ATE130425T1/de not_active IP Right Cessation
  • 1992-06-26 DE DE69206123T patent/DE69206123T2/de not_active Expired - Lifetime

Patent Citations (3)

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