FR2708335A1 - Headlamp for vehicle equipped for right-hand and left-hand traffic. - Google Patents

Abstract

a) Headlamp for vehicles equipped for right-hand traffic and left-hand traffic. b) Projector characterized in that the adjustable part (25) of the diaphragm device (22) is mounted on the fixed part (23) by means of a knife bearing, the support of the movable part (25) of the diaphragm device (22) on the fixed part (23) acting on the knife bearing by a spring element.

Description

1 2708335

  The present invention relates to a vehicle headlamp comprising a reflector, a lens (optic) remote from the reflector in the direction of the light, and

  a diaphragm device provided between the optics and the

  at least a portion of the diaphragm device which can be adjusted between two end positions by being pivotable on the part of the projector which is fixed

  relative to the adjustable part of the di-

  diaphragm, an actuating element and a spring element which is urged at least towards one of the two end positions, the diaphragm device creating a limit

  clarity / darkness for the light beam emitted by the

ejector.

  Such a projector is known according to the patent DE-

  C1 39 39 710. This projector includes a reflector, opti-

  the lens or lens remote from the reflector in the direction of the light emission and a diaphragm device between the optic and the reflector. This diaphragm device consists of a fixed diaphragm and an adjustable part under

  the shape of an additional diaphragm, rocking. The dia-

  Additional diaphragm is set between two end positions and has a control element. The additional diaphragm is pivotally mounted to the fixed diaphragm via a stud or rivet. Between the

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  fixed diaphragm and the additional diaphragm, there is a spring element as a return spring which always solicits the additional diaphragm towards a position of

  limit switch. The additional diaphragm includes a

  your coming to take in a slot of the fixed diaphragm; the end positions of the additional diaphragm are defined by the abutment of the nipple against the rim

  at the end of the slot. The element of maneuvering

  additional diaphragms is a protruding tongue on

  which acts a lever pivoted on the reflector.

  The lever has two arms; an arm acts on the lan

  watch and the other arm is protruding towards the rear of the

  Reflector. To adjust the additional diaphragm, one

  arm of the operating lever is accessible on the

  projector. The fixed diaphragm edge forms the lightness / darkness limit of the light beam coming out of the projector. The edge of the fixed diaphragm has a segment

  horizontal and an inclined segment so that the clear boundary

  corresponding darkness / darkness is on the side of the

  the opposite direction, horizontal and rising towards the outer edge, on the side of the vehicle's own circulation as regulated by the legislative provisions

  concerning asymmetrical passing lamps.

  In an end position of the diaphragm

  additional, its diaphragm edge is in

  under the inclined segment of the fixed diaphragm ridge and thus does not influence the light beam. In his

  another end position, the edge of the diaphragm

  the segment exceeds the inclined segment of the edge of the fixed diaphragm edge and forms in steps, the limit

  light / dark light beam coming out of the projector.

  When the additional diaphragm occupies this position, the diaphragm device has a diaphragm edge

  horizontally to form a clear boundary

  horizontal darkness / dark continues without the beam of

  low beam has an asymmetrical structure.

  However, the disadvantage is to reduce the range of the driver side of the vehicle. The possibility of additional diaphragm adjustment is necessary to allow the use of a vehicle equipped with the headlamp for both right and left-hand traffic, because

  from traffic on the right to traffic on the left

  on the other hand, since the clear limit

  darkness, is inclined for the traffic in the opposite direction, one would dazzle the circulation in the opposite direction. The possibility of adjustment described above for the diaphragm

  however, requires an imple-

  load-bearing because it requires additional parts as per

  example the dowel or rivet of the diaphragm bearing

  or the two-armed operating lever and its bearing. But these additional pieces complicate the

  the projector, which should be avoided for its manufacturer

  cation. The present invention aims to remedy these drawbacks and concerns for this purpose a projector of

  defined above, characterized in that the

  of the diaphragm device is mounted on the fixed part by means of a knife bearing, the support of the movable part of the diaphragm device on the part

  2 fixed acting on the knife bearing by an element with

  fate. In the projector according to the invention, since the adjustable part of the diaphragm device comprises a knife bearing, no additional parts such as a stud or a rivet are required; this also removes the mounting of an additional bearing part for the part

  adjustable from the diaphragm device.

  According to other advantageous features, the fixed part of the projector comprises a bearing block with a cup forming part of this knife bearing and the

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  adjustable part of the diaphragm device has a

  the other part of the knife bearing, and this edge is housed in the cup. Thus no additional elastic elements are required for the knife bearing.

  According to another characteristic, we have a reality

  Simple installation of the spring element if the spring element

  is a substantially C-shaped curved spring

  puyant by a branch against the adjustable part of the

  diaphragm and whose other limb leans against

  a fixed part relative to the adjustable part.

  Another advantageous characteristic allows a good guidance of the additional diaphragm without requiring any particular parts if a portion of the fixed projector relative to the adjustable part of the diaphragm device comprises a substantially flat area and the adjustable part also has a substantially flat rotated zone. towards the previous one and the fixed part comprises the stirrup-shaped supports between which and the substantially flat zone of the fixed part is maintained the zone essentially

  plane of the adjustable part, in the direction of the axis

  tick. Another advantageous characteristic makes it possible to switch the projector for right or left-hand traffic with in each case an asymmetric distribution of the light if the diaphragm device is a single and

  same adjustable diaphragm, with an edge composed of

  inclined relative to each other, and when the diaphragm is in its first end position of

  race for which the segment of ridge, right according to the di-

  rection of light is substantially horizontal and its segment

  left diaphragm edge is inclined, while in its second end position of the diaphragm, its right edge segment is inclined and its segment

  left edge is substantially horizontal.

  The present invention will be described in more detail with reference to the accompanying drawings showing two exemplary embodiments of the invention. Thus: FIG. 1 is a vertical longitudinal section of a projector with a first exemplary embodiment

a diaphragm device.

  - Figure 2 shows part of the projector in

  cross-section along the line II-II of Figure 1.

  - Figure 3 shows part of the projector in

  longitudinal section along the line III-III of Figure 2.

  FIG. 3 shows part of the projector in cross-section along the line II-II of FIG.

  a second embodiment of the diaphragm device.

  Description of the examples of realization:

  A vehicle headlight shown in the figures,

  particular for motor vehicles, includes a reflection

  10 of ellipsoidal shape with an optical axis 11. At the top of the reflector 10, there is an opening 13 receiving a light source 14 which can be a lamp

  incandescent or discharge lamp. At a certain distance

  the front edge 17 of the reflector 10, in the direction

  of the light 16 is a lens or optic 19

  linked to the reflector 10 by a support 20. At the front edge 17 of the reflector 10, in a plane perpendicular to the optical axis 11, there is a diaphragm device 22. The

  reflector can be housed in a housing 26 with the

  very large parts, this case having an opening at the front,

  The backside of the housing 26 has an opening 29 which closes with a cap 31. At the front edge 17 of the reflector

  , there is a flange 32 directed radially outwards

  and folded in the case of a reflector 10 sheet; in the case of a plastic reflector 10, this flange is formed in the material. The flange 32 is used for

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  fixing the support 20 and the diaphragm device 22 by

  example using screws or rivets 34.

  In the case of the first embodiment of FIGS. 1 to 3, the diaphragm device 22 comprises a fixed diaphragm 23 and an additional pivoting diaphragm 25 constituting an adjustable part. The fixed diaphragm 23 is integral with the support 20. The fixed diaphragm 23 has

  an upper edge 35 which forms the boundary between

  darkness / light beam coming out of the projector.

  The ridge 35 of the diaphragm has a segment 35a

  horizontally forming the lightness / darkness limit for the opposite traffic side with respect to the vehicle and a segment 35b inclined downwardly relative to the segment 35a.

  and forming the lightness / darkness limit on the circulating side

  vehicle. The light beam coming out of the projection

  therefore has a light / dark limit,

  horizontally for the side corresponding to the traffic

  placed, and on the side of the traffic of the vehicle, a limit light / darkness which goes up towards the edge of the roadway,

  thanks to the reversed realization in height of the dia-

phrasing 35.

  The additional diaphragm 25 is mounted on the side of the fixed diaphragm 23 facing the reflector 10 and can

  pivoting relative to the diaphragm 23 on a sensing axis 37

  parallel to the optical axis 11. The pivot axis 37 of the additional diaphragm 25 is close to

  the optical axis 11; however, in principle, it may be

  stalled in any way with respect to the optical axis 11.

  The additional diaphragm 25 is a sheet metal part having a substantially planar main zone 40 which extends perpendicular to the optical axis 11 and comes against the zone 41 which is also substantially flat and perpendicular to the optical axis 1il of the fixed diaphragm 23. In FIG. its main zone 40, the additional diaphragm, has on the side o is the inclined segment 35b of the diaphragm 23,

  an upper diaphragm edge 43. Laterally-

  adjacent to main zone 40, the diaphragm

  In addition, the operating element 44 has, as operating elements, an operating lever 44 protruding radially from the flange 32. The operating levers 44 are bent from the main zone 41 first in the direction

  opposed to the direction of light 16, substantially

  to the optical axis 11, then again radially with respect to the optical axis 11. At their end zone 46, the

  operating levers 44 may again be re-

  curved substantially parallel to the optical axis 11. It is also possible to have only one operating lever 44 on one side of the additional diaphragm 25. The levers of

  maneuver 44 may be provided with cutouts 47 for

ger.

  The additional diaphragm 25 is mounted on the fixed part of the projector by means of a knife bearing. In the exemplary embodiment, the fixed part is constituted by the diaphragm 23; However, the reflector 10 or the support 20 could also be used. The diaphragm 23 is a sheet metal part whose main zone 41 comprises a plurality of fasteners 49 in the form of stirrups. In the embodiment, on both sides of the optical axis 11, a support 49 is provided each time at a certain radial distance from the optical axis 11. The supports 49 have their lower end zone , forming a body with the diaphragm 23 to be bent, parallel to the optical axis 11 towards the reflector 10, for a short length, then again to be parallel to the main zone 41 to allow positioning between the zone

  41 of the diaphragm 23 and the supports 44, the di-

  additional diaphragm 25 and its main zone 40. The supports 49 have their free ends turned towards the

  up to allow the introduction of the additional diaphragm

hide 25 from above.

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  Substantially at the level of the optical axis 11, a bearing block 50 is projecting from the main zone 41 of the diaphragm 23; this block 50 is in principle made as the supports 49. It is however at a greater distance from the main zone 41 in the direction of the optical axis 11 so that the additional diaphragm 25 can come with axial clearance between the diaphragm 25 and the bearing block 50. The bearing block 50 has laterally

  a v-shaped slot 52 serving as a cup for the

  to link with the additional diaphragm 25. Sensitive-

  parallel to the optical axis 11 from the main zone 40 of the additional diaphragm 25, there is a beak 53, curved, which takes in the slot 52 of the bearing block 50 substantially parallel to the optical axis

  11 and serves as a knife for the knife bearing.

  In the main zone 40 of the supplemental diaphragm

  25 and in the main zone 41 of the diaphragm

  fixed 23, each time a hook 55, 56 has been cut off

  parallel to the optical axis 11; the two hooks 55, 56 are on the same side of the optical axis 11. The hooks 55, 56 have in their side opposite each a cutout 58, 59

  in which is taken according to the example of

  each time a branch 61, 62 of a spring 64 in the form of c. The spring 64 is prestressed so that its branches 61, 62 are bent elastically when the spring is mounted and thus tend to move away. The spring 64 exerts a force in the horizontal direction and comes against the additional diaphragm 25

  eccentric to its knife bearing for the hand-

  hold against a stop that defines the first

  additional diaphragm end position 25. Instead of the c-shaped spring 64, one could also

  between the fixed diaphragm 23 and the upper diaphragm

  additionally a compression spring. In the exemplary embodiment, the stop for the first end position of the additional diaphragm 25 is the hook 56 cut in the fixed diaphragm 23; however, he may

  be any other stop on the di-

  23. The spring 64 further pushes the additional diaphragm 23 with its spout 53 in the slot 52 of the bearing block 50 to thereby maintain the knife bearing of the additional diaphragm 25. It is however also possible to guarantee the support of the spout. 53 in the slot 52 by

a particular spring.

  Figure 2 shows the additional diaphragm in solid lines in its first end position; therein, the diaphragm edge 43 to the left of the optical axis is under the diaphragm ridge 35b

  angle of the fixed diaphragm 23. The additional diaphragm

  25 is kept in that position, in

  the hook 56 of the diaphragm 23 serving as support by the res-

  64. By exerting a downward force on the operating lever 44 of the additional diaphragm 25 (or inversely a force directed upwards on the operating lever to the left of the optical axis 11) the lever of maneuver 44 in its second end position shown in broken lines in FIG.

  additional diaphragm flips into its flanged bearing

  water around the axis 37 and its spout 53 flips around its end pressed to the bottom of the slot 52. After a certain angle of tilting about the axis 37, when the hook comes to the branch 61 of the spring 64, below the pivot axis 37, the additional diaphragm 25 is pushed by the spring 64 in its second end-of-travel position to the right of the optical axis 11; it abuts against this stop corresponding to a projecting portion 66 cut in the diaphragm 23. The projecting portion 66 is on the side of the diaphragm 23 opposite the

  spring 64 relative to the optical axis, that is to say left

  of the optical axis 11 according to FIG. 2. In the movement

  The additional diaphragm 25 is guided in a plane perpendicular to the optical axis 11 between the supports 49 and the main zone 41 of the fixed diaphragm 23. For the second end position of the di-

  additional diaphragm 25, shown in phantom

  pus, the diaphragm edge 43 overflows the edge segment

  b, inclined diaphragm 23 and is substantially horizon-

  tal. In this end position of the diaphragm

  25, there is thus generally a dia-

  continuous horizontal diaphragm formed of the edge segment 35a and the segment 43. The beam leaving the projector thus has a limit brightness / dark, horizontal continuous

  when the additional diaphragm 25 occupies this position

  end of race. The additional diaphragm 25 takes this second end position when the fixed diaphragm 23 provided for right-hand traffic, but

  that the vehicle equipped with this headlamp is used pro

  evening for traffic left. The same applies for a diaphragm 23 designed for circulation

  on the left and which is temporarily used by a circula-

right.

  To modify the additional diaphragm 25, it is possible for example when the cap 31 is removed, to make

  pass a tool through the opening 29 of the housing of the pro-

  jector, for example the blade of a screwdriver and act on the operating lever 44 of the additional diaphragm 25. The additional diaphragm 25 can thus be tilted between its two end positions and it takes no

  intermediate position, so it is not necessary

  to see the additional diaphragm 25 for

  mander. When the operating lever 44 of the diaphragm

  25 is directly inaccessible or difficult to

  inaccessible inside the case 26 of the projec-

  tor, we can equip the housing 26 of the projector with a]! control wheel 70 having at its periphery a cavity 73 substantially radial with respect to its axis of rotation 71

  and in which comes to take the end of the lever of ma-

  44. The adjustment wheel 70 of the example of

  The housing comprises diametrically opposed to the cavity 73, another cavity 74 which can receive a tool for rotating the adjusting wheel 70. The adjustment wheel can also be provided with any other point.

  grip for a tool to turn. Lors-

  turn the adjusting wheel 70, the diaphragm sup-

  25 is tilted between its two end positions by the operating lever 44 which acts in the cavity.

  Figure 4 shows a second example of

  of the diaphragm device 122 in which the parts

  identical or similar to those of the first example of

  the same references increased by 100.

  In the second exemplary embodiment, the device for di-

  diaphragm 122 consists only of a single diaphragm 123 which pivots globally; it comprises an area 125 with a diaphragm edge 135 and a zone 127 with actuating levers 144. The zone 125 is offset with respect to the zone 127 in the direction of light 16 and the two zones and 127 are connected by two stirrups 175 which extend in the direction of light 16. Diaphragm 123 is

  made of a single piece of sheet metal, zone 125 being

  replaced by folding the stirrup 175 out of the zone 127.

  The diaphragm edge 135 of the zone 125 has, seen in the direction of the light 16, a right edge segment 135a and a left edge segment 135b. The two edge segments 135a, 135b are inclined relative to one another

  as for the diaphragm 23 of the first example of realization

  tion. The diaphragm 123 is mounted on a support 120 fixed in the first embodiment on the front edge of the reflector; it is a sheet metal part. The diaphragm

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  123 can pivot about an axis 137 substantially parallel to the optical axis 11 relative to the support 120. The support

  has a zone 141 which is substantially flat, perpendicular

  and the diaphragm zone 125 is also substantially planar and extends perpendicularly to the optical axis 11. The operating levers

  144 protrude radially from the diaphragm zone 127,

  beyond the flange 32 as the operating lever 44 of the dia-

  additional phrase 25 of the first example of

tion.

  The diaphragm 123 is pivotally mounted by a

  bind with knife on a fixed part of the projector. As a fixed part according to this second embodiment, is the support 120. Several supports 149 for example two supports are cut and deformed of the area 141 of the support 120; each time we have a support 149 of share and

  else from the optical axis it at a radial distance from this

  him one. The supports 149 are made as the support 49 of the diaphragm 23 of the first embodiment. Between the support 149 and the plane region 141 of the support 120 is the diaphragm zone 125. Substantially at the level of the optical axis 11, a bearing block 150 is cut in the region 141 of the support 120, towards the reflector ; this block is made as the bearing block 50 of the first embodiment. From the diaphragm zone 125, we have

  curved toward the reflector, a spout 153 correspon-

  at beak 53 of the first embodiment. This beak

  just take in the slot 152 of the bearing block 150 sen-

  radially with respect to the optical axis 11 and

  serves as a knife for the knife bearing.

  In the diaphragm zone 127 and the zone 141 of the

  support 120, each time it is cut and bent parallel

  The two hooks 155, 156 are on the same side with respect to the optical axis 11. The hooks 155, 156 have, as in FIG.

  first embodiment, each time a cut

  cevant a branch 161, 162 of a spring 164 in the form of C. The spring 164 is prestressed so that its branches 161,

  162, in the mounting position, are curved elastically

  and tend to stray. Spring 164 exerts

  a force acting substantially in the horizontal direction

  tale and applies to the diaphragm zone 125, so

  eccentric to the knife bearing while keeping it in

  against a stop defining a first end-of-travel position of the diaphragm 123. Instead of the c-shaped spring 164, a compression spring attached between the region 141 of the support 120 and the diaphragm zone 125 could also be used. As the stop of the end positions of the diaphragm 123, there are the feet of the support 149 cut in the zone 141 of the support 120. The spring 164

  at the same time keeps the spout 153 in the zone of di-

  diaphragm 125, in the slot 152 of the bearing block 150 and thus fixes the knife diaphragm 123. It is also possible, however, to ensure the support of the nozzle 123,

  to have a particular spring in the slot 152.

  FIG. 4 shows the diaphragm 123 in solid lines, in its first end-of-travel position in which the diaphragm segment 135b, left seen in the direction of the light 16 is inclined downwards then

  that the straight edge segment 135a of the diaphragm is sensi-

  horizontally. The diaphragm 123 is held in this position by the spring 164 and its diaphragm zone, bearing against the foot of the support 149 mounted on the

  Figure 4 on the left on the optical axis 11. The light beam

  from the projector when the diaphragm 123 oc-

  This first end-of-travel position has, on the left side, a horizontal lightness / darkness limit formed by the diaphragm edge segment 135a, and on the right side it has a brightness / darkness limit, increasing formed.

  by the diaphragm edge segment 135b.

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  By applying a force directed downwards, on the operating lever 144 to the right of the optical axis 11 or vice versa a force directed upwards on the lever of

  maneuvering 144 to the left of the optical axis 11, the dia-

  Fig. 123 in its second end position shown in dashed lines in Fig. 4. The diaphragm 123 then tilts about axis 137 around its bearing.

  with a knife; its spout 153 flips around its end end

  plicated against the bottom of the slot 152. After a certain

  tilt angle about the axis 137, when the

  Chet 155 of the diaphragm zone 127 engages the branch 161 of the spring 164 placed under the axis 137, the spring 164 pushes the diaphragm 123 by its zone to the right of the optical axis 11, pushing it towards its second position end of race; in it, the diaphragm arrives with

  its zone 125 against the right support foot 149 as bu-

  ted. For this tilting movement, the diaphragm 123 is guided by its diaphragm zone 125 between the supports 149 and the plane region 141 of the support 120. In the second end position of the diaphragm 123, its edge segment 135b, left in the direction 16 of the light is substantially horizontal while its ridge segment

* a, right is tilted down. Thus, the light beam emitted by the projector, goes up on the left side with the limit

  brightness / darkness formed by the edge segment a and on the right side, the lightness / darkness limit formed

  by the edge segment 135b is substantially horizontal.

  Thus, the diaphragm device 122 makes it possible to switch between an asymmetrical distribution of the light for the

  on the right, which corresponds to the first posi-

  end-of-travel diaphragm 123 and an asymmetric light distribution for left-hand traffic, corresponding to the second end position of the

diaphragm 123.

2708335

  The use described above for the first

  example of embodiment of a control wheel 70 acts

  On the operating lever 44 of the adjustable portion of the diaphragm device, the same applies to this second embodiment of the diaphragm device.

R E V E N D ICATIONS

  1) Headlamp for vehicle comprising a

  flector (10), an (optical) lens (19) remote from the

  light guide (16) and a diaphragm device (22, 122) provided between the optic and the reflector (10), at least a portion of the

  diaphgram (25, 123) which can be set between two

  end-of-travel devices being pivotably mounted on the part (23, 120) of the headlamp which is fixed relative to the adjustable part (25, 123) of the diaphragm device (22, 122), an operating element (44, 144) and a spring element (64, 164) which is biased at least towards one

  of the two end positions, the di-

  phrasing (22, 122) creating a light / dark limit for

  the light beam emitted by the headlamp

  characterized in that the adjustable part (25, 123) of the

  diaphragm (22, 122) is mounted on the fixed part (23, 120) by means of a knife bearing (52, 53, 152, 153), bearing of the movable part (25, 123). ) of the diaphragm device (22, 122) on the fixed part (23,

  123) acting on the knife bearing by an element with

spell (64, 164).

  2) Projector according to claim 1, characterized

  in that the adjustable portion (25, 123) of the diaphragm device (22, 122) is supported in the bearing

  with a knife by the spring element (64, 164).

  3) Projector according to claim 1 or 2,

  characterized in that the fixed part (23, 120) of the headlamp

  comprises a bearing block with a cup (52, 152)

  part of this knife bearing and the adjustable part (25, 123) of the diaphragm device (22, 122) has a knife (53, 153) constituting the other part of the knife bearing, and this edge is housed in the cup (52, 152).

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  4) Projector according to any one of the

  1 to 3, characterized in that the spring element (64, 164) is a substantially shaped curved spring.

  C leaning by a branch (61, 161) against the

  movable (25, 123) of the diaphragm device (22, 122) and the other leg (62, 162) of which rests against a portion

  (23, 120) fixed relative to the adjustable portion (25, 123).

  Projector according to claim 4, characterized

  in that the spring element (64, 164) engages in

  eccentrically supports the knife bearing on the adjustable portion (25, 123) of the diaphragm device (22, 122) so that the adjustable portion (25, 123) is held by the spring member (64, 164) in both positions of

  end of stroke, against a stop (56, 66, 156, 166).

  6) Projector according to any one of the

  1 to 5, characterized in that a portion (23, 120) of the fixed projector relative to the adjustable portion (25, 123) of the diaphragm device (22, 122) includes a substantially planar region (41, 141). ) and the adjustable portion (25, 123) also has a substantially plane area facing the preceding one and the fixed portion (23, 120) includes the stirrup-shaped supports (49, 149) between which and the substantially planar region ( 41, 141) of the stationary part (23,) is maintained the substantially planar region (40, 125) of the adjustable part (25, 123), in the direction of the axis

optical (11).

  7) Projector according to claim 6, characterized

  in that the supports (49, 149) have an end zone

  mity, lower on the fixed part (23, 210), substantially

  parallel to the optical axis (11) and an end zone

  upwards, extending essentially from

  parallel to the substantially planar region (41, 141) of the stationary portion (23, 120), the substantially planar region (40, 125) of the adjustable portion (25, 123) of the diaphragm device (22, 122) is maintained between the free end regions and the essentially planar region (41,

141) of the fixed part (23, 120).

  8) Projector according to claim 6 or 7,

  characterized in that the fixed part (23, 120) of the projector is a sheet metal part in which the sup-

  ports (49, 149) in the form of stirrups.

  9) Projector according to any one of the

  1 to 8, characterized in that the device for di-

  diaphragm (22) comprises a fixed diaphragm (23) of edge (35)

  composed of a horizontal segment (35a) and a segment

  (35b) and the adjustable part is an additional diaphragm

  (25) with a diaphragm ridge (43), and in the

  first end position of the additional diaphragm

  wall (25), its diaphragm edge (43) is

  under the inclined edge segment (35b) of the fixed diaphragm (23) and the second end position of the further diaphragm (25), its edge (43) is substantially horizontal above the edge segment inclined (35b)

fixed diaphragm (23).

  10) Projector according to claim 9, characterized

  characterized in that the fixed part (23) is the fixed diaphragm.

  11) Projector according to any one of the

  1 to 8, characterized in that the device for di-

  diaphragm (122) is a single adjustable diaphragm (123), with an edge (135) composed of segments (135a, b) inclined relative to each other, and when the diaphragm (123) is in his first end position for which the ridge segment (135a), right

  in the light direction (16) is substantially horizontal

  zontal and its left diaphragm edge segment (135b) is inclined, while in its second end position of the diaphragm (123), its right edge segment (135a) is inclined and its left edge segment (135b) is

substantially horizontal.

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  12) Projector according to any one of the

  prior art, characterized in that the reflector (10), the diaphragm device (22, 122) and the lens (19) are housed in a housing (26) having on its rear side an opening (29) and the adjusting member is pivotally mounted in the housing (26), the adjustable portion (25,123) of the operating member (44,144) acts on the diaphragm device (22,122) and can be rotated to the using a tool introduced through the opening (29) of the

  housing (26) for tilting the adjustable portion (25, 123).