JP5177115B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device such as a spotlight used in a television studio, a photo studio, a stage, or the like.

  For example, in Patent Document 1, there is an illuminating device including a spotlight having a moving mechanism (see paragraph 0042 in the detailed description of the invention of Patent Document 1) that relatively changes the separation distance between the light source and the focus lens. Proposed.

JP 2007-59220 A

  By the way, in such an illuminating device, the maximum separation distance between the light source and the focus lens is longer, the minimum separation distance between the light source and the focus lens is shorter, and the distance between the light source and the focus lens can be changed relatively. It is desirable to be able to easily perform the fluctuation operation.

  The present invention has been made in view of the above-mentioned points. The object of the present invention is to provide a longer maximum separation distance between the light source and the focus lens, and a shorter minimum separation distance between the light source and the focus lens. An object of the present invention is to provide an illuminating device that can be varied and that can easily perform a variation operation of a distance between a light source and a focus lens.

  The illuminating device of the present invention includes a front housing having a focus lens on the front wall and an open rear side, and is disposed rearward with respect to the front housing, and the focus lens on the rear wall. A rear housing that is provided with a light source that emits light to be projected via the front and that is open forward, and is disposed between the front housing and the rear housing, and the front housing A middle housing that surrounds a rear portion of the rear housing and a front portion of the rear housing, and a front coupling mechanism that couples the front housing movably in the front-rear direction to the middle housing; A rear coupling mechanism that couples the rear housing to the middle housing so as to be relatively movable in the front-rear direction, and the operation causes the front housing to move backward relative to the middle housing and synchronizes with the rearward movement. Move the rear housing forward relative to the middle housing, while moving the front housing to the middle And a front / rear movement operating means for moving the rear housing backward relative to the middle housing in synchronization with the forward movement and extending in the front-rear direction of the front housing. Is arranged on the outer peripheral side or the inner peripheral side with respect to the peripheral wall extending in the front-rear direction of the rear case so that it can be placed on the rear case inside the middle case, and can be moved back and forth. The means includes a rod-like operation member that is rotatably supported by the middle housing and has a pair of operation parts separated from the rotation axis with respect to the middle housing, and the rod-like operation members as a front housing and a rear housing. The rotation of the rod-shaped operating member that is connected and rotated by the operation is transmitted to the front case as a backward movement force with respect to the middle case of the front case, and as a forward movement force with respect to the middle case of the rear case While being transmitted to the rear housing The reverse rotation of the bar-shaped operating member that is rotated in the reverse direction is transmitted to the front case as a forward moving force with respect to the middle case of the front case, and transmitted to the rear case as a rearward moving force with respect to the middle case of the rear case. And an operation transmission means.

  According to the lighting device of the present invention, in particular, a front coupling mechanism that couples the front housing so as to be movable in the front-rear direction relative to the middle housing, and the rear housing relative to the middle housing. And a rear connection mechanism that is movably connected in the front-rear direction, and the peripheral wall extending in the front-rear direction of the front case can be placed on the rear case inside the middle case. As described above, since the outer peripheral side or the inner peripheral side is arranged on the peripheral wall extending in the front-rear direction of the rear housing, the maximum separation distance between the light source and the focus lens is longer, and the minimum distance between the light source and the focus lens is The separation distance is shorter and can be relatively varied, and the entire illumination device can be made compact by minimizing the separation distance between the light source and the focus lens, which facilitates transportation and installation. The front housing is The rear housing is moved forward with respect to the middle housing in synchronization with the rearward movement, while the front housing is moved forward with respect to the middle housing and the rear housing is synchronized with the front movement. Forward / backward movement operating means for moving the casing backward with respect to the middle casing, and the forward / backward movement operating means is rotatably supported by the middle casing and has a rotation axis with respect to the middle casing. A rod-like operation member having a pair of operation parts separated from each other, and the rod-like operation member are connected to the front housing and the rear housing, and the rotation of the rod-like operation member rotated by the operation is controlled by the front housing. While transmitting to the front case as a rearward moving force with respect to the middle case and transmitting to the rear case as a forward moving force with respect to the middle case of the rear case, the reverse rotation of the rod-like operation member that is reversely rotated by the operation is transmitted. In the middle case of the front case A distance between the light source and the focus lens because it includes an operation transmission means that transmits the forward movement force to the front case as a forward movement force and transmits the rear movement force to the rear case with respect to the middle case of the rear case. For example, as shown in FIG. 15, even when the lighting device is suspended from a ceiling or the like, a pair of operation portions of a rod-shaped operation member is formed by an operation rod having a hook formed at the tip. By pulling down any of the above, it is possible to easily change the distance between the light source and the focus lens.

  The rotational axis of the rod-shaped operation member with respect to the middle housing is located on a line connecting the pair of operation units.

  The distance from each of the pair of operation portions to the rotation axis with respect to the middle housing of the rod-shaped operation member is equal to each other.

  The rod-shaped operating member is composed of a rod-shaped main body extending in the front-rear direction, one of a pair of operating portions formed on one end of the rod-shaped main body, and a hook portion recessed upward, and on the other end of the rod-shaped main body. And the other of the pair of operation portions formed of a hook portion formed in a concave shape.

  The operation transmitting means mechanically synchronizes and causes the rearward movement with respect to the middle casing of the front casing and the forward movement with respect to the middle casing of the rear casing based on an operation of one of the pair of manipulation sections. Based on the operation of the other of the pair of operation units, the forward movement with respect to the middle casing of the front casing and the rearward movement with respect to the middle casing of the rear casing are caused to occur in mechanical synchronization. .

  The operation transmitting means has a circular arc surface formed with teeth, and rotates by a predetermined amount in accordance with the amount of rotation of the rod-like operation member by one operation of the pair of operation units, while the pair of operation units A toothed rotary member connected to the rod-like operation member so as to reversely rotate by a predetermined amount according to the reverse rotation amount of the rod-like operation member by the other operation, and the teeth of the toothed rotation member mesh And a pinion that is rotatably supported by the middle housing, a rack member that is fixed to one of the front housing and the rear housing and meshes with the pinion, and extends in the front-rear direction. The other rack member extending in the front-rear direction is fixed to the other one of the front housing and the rear housing so that the pinion is positioned between the members and is engaged with the pinion. Yes.

  The toothed rotating member has a large diameter with respect to the pinion.

  According to the present invention, the maximum separation distance between the light source and the focus lens is longer, the minimum separation distance between the light source and the focus lens is shorter and can be relatively varied, and the distance between the light source and the focus lens can be changed. It is possible to provide an illuminating device that can easily perform a variable operation.

It is side view explanatory drawing of the example of embodiment of this invention. It is side view explanatory drawing which abbreviate | omitted a part of the example shown in FIG. It is explanatory drawing mainly of the back-and-forth movement operation means of the example shown in FIG. It is bottom view explanatory drawing of the example shown in FIG. It is front view explanatory drawing of the example shown in FIG. It is explanatory drawing mainly regarding a light source of the example shown in FIG. It is a VII-VII line arrow directional cross-sectional expansion explanatory drawing shown in FIG. It is a VIII-VIII arrow directional cross-sectional enlarged explanatory view shown in FIG. FIG. 5 is a cross-sectional enlarged explanatory view taken along line IX-IX shown in FIG. 4. FIG. 5 is a cross-sectional enlarged explanatory view taken along line XX shown in FIG. 4. It is operation | movement explanatory drawing of the example shown in FIG. FIG. 12 is a partially omitted explanatory diagram of the example shown in FIG. 11. It is operation | movement explanatory drawing of the example shown in FIG. FIG. 14 is a partially omitted explanatory diagram of the example shown in FIG. 13. FIG. 2 is a simplified diagram showing an example of use of the example shown in FIG. 1.

  Next, the present invention will be described in more detail based on an example of a preferred embodiment shown in the drawings. The present invention is not limited to these examples.

  1 to 15, the illumination device 1 of the present example includes a front housing 4 in which a focus lens 3 is provided on a front wall 2 and the rear is open, and a rear with respect to the front housing 4. A rear case 8 provided with a light source 7 for emitting light to be projected through the focus lens 3 on the rear wall 6 and the front case 4 being open at the front. And a middle case 9 disposed between the rear case 8 and surrounding the rear part of the front case 4 and the front part of the rear case 8, and the front case 4 as the middle case. A front connection mechanism 10 that is movably connected to the body 9 in the X direction (front-rear direction) and a rear case 8 are connected to the middle case 9 so as to be movable in the X direction. The rear connection mechanism 11 and the operation move the front housing 4 backward relative to the middle housing 9 and the rear The rear casing 8 is moved forward relative to the middle casing 9 in synchronization with the movement, while the front casing 4 is moved forward relative to the middle casing 9 and is synchronized with the forward movement. And a back-and-forth movement operating means 12 for moving the rear side of the center housing 9 backward. The illuminating device 1 of this example is used as a spotlight for television studio illumination as shown in FIG.

  The front housing 4 includes the front wall 2 and a cylindrical peripheral wall 22 extending rearward from the peripheral edge 21 of the front wall 2 in the X direction. A lens 3 is attached. The focus lens 3 is made of an acrylic lens and has a circular shape when viewed from the front. The rear end 23 of the peripheral wall 22 is opened so that light from the light source 7 is projected through the focus lens 3. A holder 24 that holds a filter such as a color filter is attached to the peripheral edge 21 of the front wall 2. Such front housing 4 may have a polygonal shape such as a square shape, a hexagonal shape, an octagonal shape or the like in a front view or a back view, or may be a circular shape.

  The peripheral wall 22 extending in the X direction of the front housing 4 is a rear housing inside the middle housing 9 when the front housing 4 is moved rearward in the X direction with respect to the middle housing 9. It is arranged on the outer peripheral side with respect to the peripheral wall 32 extending in the X direction of the rear housing 8 so as to be superposed on the body 8. In this example, the peripheral wall 22 is disposed on the outer peripheral side of the peripheral wall 32, but the rear casing 8 is provided inside the middle casing 9 even if the peripheral wall 22 is disposed on the opposite inner peripheral side. And can be arranged.

  The rear housing 8 includes the rear wall 6 and a cylindrical peripheral wall 32 extending forward from the peripheral edge 31 of the rear wall 6 in the X direction. It is attached detachably. The front end 33 of the peripheral wall 32 is open so that light from the light source 7 is projected through the focus lens 3. A heat radiating plate 34 that radiates heat from the light source 7 is attached to the rear surface of the rear wall 6. Like the front housing 4, the rear housing 8 may have a polygonal shape such as a quadrangular shape, a hexagonal shape, or an octagonal shape in a front view or a rear view, or may have a circular shape.

  The bottom portion 35 of the peripheral wall 32 is concave with respect to the middle housing 9, and the rear coupling mechanism 11 is disposed on the concave bottom portion 35. The peripheral wall 32 extending in the X direction of the rear housing 8 is a front housing inside the middle housing 9 when the rear housing 8 is moved forward in the X direction with respect to the middle housing 9. 4 is arranged on the inner peripheral side with respect to the peripheral wall 22 extending in the X direction of the front housing 4 so that the region overlapped with 4 can be enlarged and arranged. In this example, the peripheral wall 32 is arranged on the inner peripheral side of the peripheral wall 22, but the rear casing 8 is provided inside the middle casing 9 even if it is arranged on the opposite outer peripheral side. And can be arranged.

  For example, as shown in FIG. 6, the light source 7 has a planar light emitting surface 42 on which a plurality of light emitting diodes 41 are arranged. The light emitting surface 42 has a circular shape when viewed from the front. The light emitting surface 42 may be covered with an acrylic Fresnel lens on the light projecting side. A plurality of light emitting diodes 41 are arranged in the radial direction from the center of the light emitting surface 42, and in this example, four are arranged side by side as shown in FIG. The four light emitting diodes 41 arranged in this way are sandwiched and electrically connected in the radial direction between the poles 43 and 44 arranged at the center of the light emitting surface 42 and at the periphery thereof, respectively. Such a light source 7 is detachably fitted or screwed to the rear wall 6. A power supply 45 that supplies power to the light source 7 may be mounted inside the rear housing 8. Such a light source 7 can perform, for example, about 60 W of illumination equivalent to that of an incandescent bulb 1 kW, thus significantly reducing power consumption and heat generation, and reducing the diameter of power cables and the like. Can also be planned.

  Similar to the front housing 4 and the rear housing 8, the cylindrical middle housing 9 may have a rectangular shape, a hexagonal shape, an octagonal shape or the like in a front view or a rear view, or a circular shape. It may be. The middle housing 9 is connected to the cylindrical peripheral wall 51, the inner wall 53 disposed on the inner peripheral side with respect to the bottom wall 52 of the peripheral wall 51, and the rear end of the bottom wall 52 and the inner wall 53. Wall 54. The cross sections of the bottom wall 52, the inner wall 53, and the connecting wall 54 are U-shaped as shown in FIG. 9, for example. The peripheral wall 22 is arranged so as to be movable in the X direction in the slit portion 55 formed by the bottom wall 52, the internal wall 53, and the connecting wall 54, and the peripheral wall 32 is X in the inner portion of the internal wall 53. It is arranged to be movable in the direction.

  A support frame 56 that is suspended and supported is provided on the side wall 60 of the middle housing 9. The adjustment of the projection angle mainly in the vertical direction orthogonal to the X direction is performed by loosening the knob 57 of the support frame 56 and extending the entire illumination device 1 excluding the support frame 56 in the X direction and the Y direction orthogonal to the vertical direction. The rotation is performed around the heart, and then the knob 57 is tightened to maintain a desired light projection angle in the vertical direction. Note that the attachment position of the support frame 56 with respect to the middle housing 9 may be arranged at the center of gravity of the entire lighting device 1 excluding the support frame 56. As shown in FIG. 15, for example, the support frame 56 is attached to a support shaft 75 that is suspended from a ceiling surface 74 of a television studio or the like. The support shaft 75 is made of a telescoping tube.

  For example, as shown in FIGS. 7 to 10, the front coupling mechanism 10 is disposed so as to face the rail body 61 in the vertical direction and a rail body 61 that is attached to the bottom 25 of the peripheral wall 22 so as to extend in the X direction. The rail body 62 is attached to the inner wall 53 so as to extend in the X direction, and the rail bodies 61 and 62 are connected to the rail bodies 61 and 62 so as to be movable relative to each other in the X direction. And a slider member 63 extending in the X direction, which is movably fitted to each other. The rail bodies 61 and 62 have the same length. The length of the slider member 63 is shorter than or equal to the length of the rail bodies 61 and 62. The attachment portion 58 of the inner wall 53 to which the rail body 62 is attached is arranged in a space defined by the concave bottom portion 35 by being bent toward the inner peripheral side with respect to the portion excluding the attachment portion 58 of the inner wall 53. The rail body 62 attached to the attachment portion 58 is also arranged in the space, so that the front coupling mechanism 10 can be arranged adjacent to the rear coupling mechanism 11. Therefore, the wall thickness from the middle housing 9 to the rear housing 8 can be reduced.

  For example, as shown in FIGS. 7 to 10, the rear coupling mechanism 11 includes a rail body 66 that is attached to the bottom portion 35 so as to extend in the X direction, and an inner wall that is disposed so as to face the rail body 66 in the vertical direction. 53, and a rail body 67 that is attached to the rail body 66 and extends in the X direction, and the rail bodies 66 and 67 are movable in the X direction to each of the rail bodies 66 and 67 so as to be movable relative to each other in the X direction. And a slider member 68 extending in the X direction. The rail bodies 66 and 67 have the same length. The length of the slider member 68 is shorter than or equal to the length of the rail bodies 66 and 67. The rail bodies 61 and 62 and the rail pairs 66 and 67 have the same length.

  The front coupling mechanism 10 is configured to cause the rail body 61 to move in the X direction with respect to the rail body 62 when a moving force in the X direction with respect to the middle housing 9 is applied to the front housing 4. The connection mechanism 11 is configured to cause the rail body 66 to move in the X direction with respect to the rail body 67 when a movement force in the X direction with respect to the middle housing 9 is applied to the rear housing 8.

  The front coupling mechanism 10 includes a long hole or slit 71 provided in the peripheral wall 22 of the front housing 4 and a pin fixed to the middle housing 9 and disposed in the long hole or slit 71. Even if a guide means 73 having a protrusion 72 is provided and the guide means 73 guides the movement in the X direction relative to the middle housing 9 of the front housing 4. In addition, in addition, the maximum movement distance in the X direction relative to the middle housing 9 of the front housing 4 may be defined. The front connecting mechanism 10 includes guide means formed in the same manner as the guide means 73 and guides the movement in the X direction relative to the middle housing 9 of the rear housing 8. In addition, the maximum movement distance in the X direction relative to the middle housing 9 of the rear housing 8 may be defined.

  The back-and-forth moving operation means 12 is supported by the middle housing 9 so as to be rotatable, and has a pair of operation portions 81 and 82 separated from the rotation axis C1 for the middle housing 9, and a rod-like operation member 83. The member 83 is connected to the front housing 4 and the rear housing 8, and the rotation of the rod-like operation member 83 rotated in the R1 direction by the operation in the R1 direction is backward relative to the middle housing 9 of the front housing 4. This is transmitted to the front housing 4 as a moving force and transmitted to the rear housing 8 as a forward moving force with respect to the middle housing 9 of the rear housing 8. The reverse rotation in the R2 direction is transmitted to the front housing 4 as a forward moving force with respect to the middle housing 9 of the front housing 4 and transmitted to the rear housing 8 as a backward moving force with respect to the middle housing 9 of the rear housing 8. Operation transmission means 99 for performing There.

  The rod-like operation member 83 includes a rod-like main body 80 extending in the X direction, the operation portion 81 including the hook portion formed in a concave shape at one end of the rod-like main body 80, and the other end of the rod-like main body 80. The above-mentioned operation part 82 which consists of a hook part formed in a concave shape toward the is provided.

  The rotation axis C1 with respect to the middle housing 9 of the rod-shaped operation member 83 is located on a line connecting the operation units 81 and 82, and the distances from the operation units 81 and 82 to the rotation axis C1 are equal to each other.

  The rotation axis C1 of the rod-shaped operation member 83 and the rotation axis of the support frame 56 that is rotatably provided in the middle casing 9 are concentric with each other. For this reason, each of the front casing 4 and the rear casing 8 is provided. Even if it is moved in the X direction relative to the middle housing 9, it is possible to reduce the possibility that the position of the center of gravity of the entire lighting device 1 fluctuates, and thus to perform desired light projection.

  2 and 3, for example, the operation transmitting means 99 has a semicircular arc surface 85 on which teeth 84 are formed, and R1 of the rod-shaped operation member 83 by the operation of lowering the operation portion 81. The rod-like operation member is rotated by a predetermined amount in the R1 direction according to the rotation amount of the direction, and is reversely rotated by a predetermined amount in the R2 direction according to the reverse rotation amount of the rod-like operation member 83 in the R2 direction by the pulling operation of the operation unit 82. 83, a toothed rotating member 86, a pinion 89 meshed with the teeth 84 of the toothed rotating member 86 and rotatably supported by the middle housing 9, and a front housing 4 A rack member 87 extending in the X direction that is fixed and meshed with the pinion 89, and is fixed to the rear housing 8 so that the pinion 89 is positioned between the rack member 87 and the pinion 89. Meshed And it includes a rack member 88 that extends in the X direction.

  The toothed rotation member 86 and the pinion 89 are rotatably supported on the side wall 60 of the middle housing 9. The rack members 87 and 88 are interposed between the front housing 4 and the rear housing 8, and the rack member 87 is fixed to the inner peripheral side of the side portion 26 of the peripheral wall 22. It is fixed to the outer peripheral side of the side portion 36 of the peripheral wall 32.

  The rotation shaft 90 of the toothed rotation member 86 is attached to the central portion in the longitudinal direction of the rod-shaped operation member 83 through the support frame 56. The rotation of the toothed rotating member 86 in the R1 direction is limited by contacting a protruding stopper 91 provided in the middle housing 9 as shown in FIG. The rotation is limited by contacting the stopper 91 as shown in FIG. The toothed rotation member 86 has a large diameter with respect to the pinion 89, thereby reducing the rotation amount of the rod-like operation member 83 with respect to the movement amount in the X direction of the front housing 4 and the rear housing 8. Thus, a desired focus operation can be easily performed. Note that the ratio between the amount of rotation of the rod-shaped operation member 83 and the amount of movement of each of the front housing 4 and the rear housing 8 in the X direction is set by adjusting the diameters of the toothed rotating member 86 and the pinion 89. Is done.

  The pinion 89 extends from the outer peripheral side of the side portion 36 of the rear housing 8 to the middle housing 9 through a slit 92 extending in the X direction formed in the side portion 26 of the peripheral wall 22 of the front housing 4. The shaft 93 of the pinion 89 is rotatably attached to the middle housing 9. A portion on the rear housing 8 side of the pinion 89 meshes with the rack members 87 and 88, and a portion on the middle housing 9 side of the pinion 89 meshes with the toothed rotating member 86. The pinion 89 is arranged so as to mechanically synchronize and transmit the rotation and reverse rotation of the toothed rotation member 86 to the rack members 87 and 88 as a moving force in the X direction.

  Such operation transmission means 99 is moved backward with respect to the middle housing 9 of the front housing 4 and moved forward with respect to the middle housing 9 of the rear housing 8 based on one operation of the pair of operation portions 81 and 82. Are generated in synchronism with each other, while the forward movement of the front housing 4 with respect to the middle housing 9 and the middle housing 9 of the rear housing 8 are performed based on the other operation of the pair of operation portions 81 and 82. The backward movement with respect to is mechanically synchronized.

  The center of gravity of the entire lighting device 1 excluding the support frame 56 is preferably located on a line passing through the rotation axis C1 of the rod-shaped operation member 83 and the rotation axis of the support frame 56, and can be used to operate the rod-shaped operation member 83. The rearward movement amount of the rack member 87 and the forward movement amount of the rack member 88 are equal to each other, and the forward movement amount of the rack member 87 and the rearward movement amount of the rack member 88 based on the operation of the rod-shaped operation member 83 are equal to each other. Therefore, even if each of the front housing 4 and the rear housing 8 is moved in the X direction relative to the middle housing 9, the possibility that the position of the center of gravity of the entire lighting device 1 fluctuates can be significantly reduced. Thus, desired light projection can be performed.

  In the lighting device 1 described above, the rod-like operation member 83 is rotated in the R1 direction by the pulling-down operation of the operation unit 81, the toothed rotation member 86 is rotated in the R1 direction by this rotation, and this rotation is used as a movement force in the X direction. 89 is transmitted mechanically synchronously to the rack members 87 and 88, and thus the front housing 4 to which the rack member 87 is fixed is moved forward with respect to the middle housing 9, and is synchronized therewith. Then, the rear housing 8 to which the rack member 88 is fixed is moved rearward with respect to the middle housing 9, and the distance between the light source 7 and the focus lens 3 shown in FIG. Lengthen as shown.

  Further, the rod-like operation member 83 is reversely rotated in the R2 direction by the lowering operation of the operation portion 82, and the toothed rotation member 86 is reversely rotated in the R2 direction by this reverse rotation, and this reverse rotation is used as a moving force in the X direction to pinion 89. Is transmitted mechanically synchronously to the rack members 87 and 88, and thus the front housing 4 to which the rack member 87 is fixed is moved rearward with respect to the middle housing 9, and is synchronized therewith. Then, the rear housing 8 to which the rack member 88 is fixed is moved forward with respect to the middle housing 9, and the distance between the light source 7 and the focus lens 3 shown in FIG. 1 is shown in FIGS. Keep it short.

  Note that, based on the reverse rotation of the rod-shaped operation member 83 in the R2 direction, the front casing 4 is moved rearward with respect to the middle casing 9, and the rear casing 8 is moved forward with respect to the middle casing 9. In this case, the peripheral walls 22 and 32 of the front casing 4 and the rear casing 8 are accommodated inside the middle casing 9, and the peripheral wall 32 is disposed inside the peripheral wall 22, and thus the front casing. The peripheral wall 22 of the body 4 and the peripheral wall 32 of the rear housing 8 are overlapped with each other inside the middle housing 9. Thus, the illuminating device 1 with which the surrounding walls 22 and 32 were piled up becomes compact as shown in FIG. Further, based on the rotation of the rod-shaped operation member 83 in the R1 direction, the front casing 4 is moved forward with respect to the middle casing 9, and the rear casing 8 is moved rearward with respect to the middle casing 9. In this case, the peripheral walls 22 and 32 of the front casing 4 and the rear casing 8 are extracted from the inside of the middle casing 9, and the above-described overlapping of the peripheral walls 22 and 32 is released and the state shown in FIG. The long state shown in FIGS. 11 and 12 is obtained.

  When the lighting device 1 of the present example is suspended from a ceiling or the like of a television studio or the like as shown in FIG. 15, for example, a pair of operation portions of the rod-like operation member 83 is formed by an operation rod 76 having a hook formed at the tip. The operation of changing the distance between the light source 7 and the focus lens 3 can be easily performed by pulling down one of 81 and 82.

  According to the illuminating device 1 of the present example, the front lens 2 is provided with the focus lens 3 on the front wall 2 and the rear side is open, and the front case 4 is arranged rearward with respect to the front case 4. The rear wall 8 is provided with a light source 7 that emits light to be projected via the focus lens 3 and the front case 4 is opened, and the front case 4 and the rear case 8 are provided. A middle housing 9 that is disposed between the rear housing 8 and the rear housing 8 and a front housing 4 that is disposed between the front housing 4 and the front housing 4. A front connection mechanism 10 that is relatively movable in the X direction, a rear connection mechanism 11 that connects the rear housing 8 to the middle housing 9 so as to be relatively movable in the X direction, and a front by operation. The rear housing 4 is moved backward with respect to the middle housing 9 and the rear housing 8 is moved to the middle in synchronization with the rearward movement. Before and after moving the front housing 4 forward relative to the middle housing 9 and moving the rear housing 8 backward relative to the middle housing 9 in synchronization with the forward movement And a peripheral wall 22 extending in the X direction of the front housing 4 so that the rear housing 8 can be placed inside the middle housing 9 so as to overlap the rear housing 8. It is arranged on the outer peripheral side or inner peripheral side, in this example, the outer peripheral side with respect to the peripheral wall 32 extending in the X direction of the body 8, and the forward / backward movement operating means 12 is rotatably supported by the middle housing 9. And a rod-like operation member 83 having a pair of operation portions 81 and 82 separated from the rotation axis C1 with respect to the middle housing 9, and the rod-like operation member 83 are connected to the front housing 4 and the rear housing 8. The rotation of the rod-like operation member 83 rotated by the operation is performed on the front housing 4. A bar-like operation member that is transmitted to the front housing 4 as a rearward movement force with respect to the rear housing 9 and is transmitted to the rear housing 8 as a frontward movement force with respect to the middle housing 9 of the rear housing 8, while being reversely rotated by an operation. The reverse rotation of 83 is transmitted to the front housing 4 as a forward moving force with respect to the middle housing 9 of the front housing 4 and transmitted to the rear housing 8 as a backward moving force with respect to the middle housing 9 of the rear housing 8. Since the operation transmission means 99 is provided, the maximum separation distance between the light source 7 and the focus lens 3 is longer, and the minimum separation distance between the light source 7 and the focus lens 3 is shorter and can be relatively varied. In addition, by minimizing the separation distance between the light source 7 and the focus lens 3, the entire illumination device 1 can be made compact, and transportation and installation can be facilitated. Change in distance For example, as shown in FIG. 15, even when the lighting device 1 is suspended from a ceiling or the like, a pair of rod-like operation members 83 is formed by an operation rod 76 having a hook formed at the tip. The operation of changing the distance between the light source 7 and the focus lens 3 can be easily performed by lowering one of the operation units 81 and 82.

  According to the illuminating device 1, the light source 7 has a planar light emitting surface 42 on which a plurality of light emitting diodes 41 are arranged, so that the heat generation amount and power consumption of the illuminating device 1 can be greatly reduced. .

DESCRIPTION OF SYMBOLS 1 Illuminating device 3 Focus lens 4 Front housing | casing 7 Light source 8 Rear housing | casing 9 Middle housing | casing 10 Front connection mechanism 11 Rear connection mechanism 12 Back and forth movement operation means 83 Bar-shaped operation member 99 Operation transmission means

Claims (7)

  A front case having a focus lens on the front wall and an open rear side, and a rear case with respect to the front case, are projected on the rear wall via the focus lens. A rear housing that is provided with a light source that emits light to be emitted and that is open at the front, a rear housing that is disposed between the front housing and the rear housing, and the rear housing A middle case surrounding the front part of the case, a front connection mechanism that connects the front case so as to be movable in the front-rear direction relative to the middle case, and a rear case as the middle case And a rear connection mechanism that is movably connected in the front-rear direction, and the front casing is moved backward with respect to the middle casing by operation and the rear casing is synchronized with the rearward movement. While moving the front case forward relative to the middle case And a back-and-forth movement operating means for moving the rear housing backward relative to the middle housing in synchronization with the forward movement, and the peripheral wall extending in the front-rear direction of the front housing is It is arranged on the outer peripheral side or the inner peripheral side with respect to the peripheral wall extending in the front-rear direction of the rear case so that it can be placed superimposed on the rear case inside. A rod-like operation member having a pair of operation parts that are supported rotatably at the center and separated from the rotation axis with respect to the middle case, and the rod-like operation member are connected to the front case and the rear case. The rotation of the rod-like operation member rotated by the rotation is transmitted to the front casing as a backward movement force with respect to the middle casing of the front casing and to the rear casing as a forward movement force with respect to the middle casing of the rear casing. On the other hand, a rod-like operation that is rotated backward by the operation Operation transmitting means for transmitting the reverse rotation of the member to the front case as a forward moving force with respect to the middle case of the front case and to the rear case as a rearward moving force with respect to the middle case of the rear case; A lighting device provided.   The lighting device according to claim 1, wherein the rotation axis of the rod-shaped operation member with respect to the middle housing is located on a line connecting the pair of operation units.   The illuminating device according to claim 1, wherein the distance from each of the pair of operation units to the rotation axis with respect to the middle housing of the rod-shaped operation member is equal to each other.   The rod-shaped operating member is composed of a rod-shaped main body extending in the front-rear direction, one of a pair of operating portions formed on one end of the rod-shaped main body, and a hook portion recessed upward, and on the other end of the rod-shaped main body. The lighting device according to any one of claims 1 to 3, further comprising: the other of the pair of operation portions including a hook portion formed in a concave shape toward the surface.   The operation transmitting means mechanically synchronizes and causes the rearward movement with respect to the middle casing of the front casing and the forward movement with respect to the middle casing of the rear casing based on an operation of one of the pair of manipulation sections. Based on the operation of the other of the pair of operation units, the forward movement with respect to the middle casing of the front casing and the rearward movement with respect to the middle casing of the rear casing are caused to occur in mechanical synchronization. The illumination device according to any one of claims 1 to 4.   The operation transmitting means has a circular arc surface formed with teeth, and rotates by a predetermined amount in accordance with the amount of rotation of the rod-like operation member by one operation of the pair of operation units, while the pair of operation units A toothed rotary member connected to the rod-like operation member so as to reversely rotate by a predetermined amount according to the reverse rotation amount of the rod-like operation member by the other operation, and the teeth of the toothed rotation member mesh And a pinion that is rotatably supported by the middle housing, a rack member that is fixed to one of the front housing and the rear housing and meshes with the pinion, and extends in the front-rear direction. The other rack member extending in the front-rear direction is fixed to the other one of the front housing and the rear housing so that the pinion is positioned between the members and is engaged with the pinion. 6. The method according to any one of claims 1 to 5, wherein: The lighting device.   The lighting device according to claim 6, wherein the toothed rotating member has a large diameter with respect to the pinion.

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