CN214948543U - Can accurate face light of adjusting irradiation position - Google Patents

Abstract

The utility model discloses a can accurate adjusting shine the face light of position, including the crane, elevator motor and screw rod lift have from left to right set gradually in the frame of crane, the output of elevator motor with the left end of screw rod lift links to each other, the screw rod lift runs through the top and bottom of crane, the upper end of screw rod lift is provided with the electric cabinet, four angles of the bottom of electric cabinet all are provided with the slide bar, the lower extreme slip of slide bar cup joints in the sliding sleeve of crane; a rotating motor is arranged inside the electric cabinet, a support is arranged at the output end of the rotating motor, the support is of a U-shaped structure and is positioned above the electric cabinet, a lamp body is arranged in a U-shaped groove of the support, rotating shafts are arranged on the left side and the right side of the lamp body, and the two rotating shafts are respectively connected to the upper ends of the left side and the right side of the support; the utility model discloses debugging intensity is low, work precision is high, has good market using value.

Description

Can accurate face light of adjusting irradiation position

Technical Field

The utility model belongs to the technical field of the face light, especially, relate to a face light that can accurate regulation shines the position.

Background

The surface light lamp is used as one of stage lighting, mainly projects light to a stage from the top of an audience in a front direction, is used as a main front light of a performance area, is mainly used for lighting a performer on the stage in a front direction, is used for modeling a figure or enabling an object on the stage to show a three-dimensional effect, and sometimes also has the functions of follow lighting and the like on the surface light, so that the surface light lamp plays a vital role in a stage light position system, and the installation and the adjustment of the surface light lamp are very important.

The existing surface light lamp is installed on the installation frame manually in installation, then the installation position and the angle are continuously adjusted according to the irradiation effect of light, the position which is needed is difficult to be accurately adjusted, the lighting effect of the stage cannot be met at high quality, especially, scenes where stages at different positions are required to be switched back and forth, multiple groups of surface light lamps are required to be switched back and forth to meet the lighting effect of the corresponding stage lamp, the waste of light cost is caused, the time for installation and adjustment is also increased, the debugging efficiency is reduced, especially, stages at higher installation positions are large in installation difficulty, the labor intensity of workers is high due to long debugging time, the labor is easy, the working efficiency is low, and danger exists.

In addition, the surface light lamp generally works continuously, more heat is generated, the accumulation of the heat can cause the damage of electronic elements in the lamp body and influence the service life of the surface light lamp, however, most of the existing surface light lamps have poor heat dissipation effect; and the existing surface light lamp also has no anti-theft function and fire alarm function, and the safety factor is lower.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can accurate regulation shine the surface light lamp of position, the above-mentioned problem of solution.

In order to solve the above problem, the utility model provides a technical scheme as follows: a surface light capable of accurately adjusting an irradiation position is characterized by comprising a lifting frame, wherein a lifting motor and a screw rod lifter are sequentially arranged in a frame of the lifting frame from left to right, the output end of the lifting motor is connected with the left end of the screw rod lifter, the screw rod lifter penetrates through the upper surface and the lower surface of the lifting frame, an electric cabinet is fixedly arranged at the upper end of the screw rod lifter, four corners at the bottom of the electric cabinet are respectively and vertically provided with a sliding rod, four corners at the upper end of the lifting frame are respectively and fixedly provided with a sliding sleeve, and the lower end of the sliding rod is slidably sleeved in the sliding sleeve; a rotating motor is arranged inside the electric cabinet, a support is arranged at the output end of the rotating motor, the support is of a U-shaped structure and is positioned above the electric cabinet, a lamp body is arranged in a U-shaped groove of the support, rotating shafts are arranged on the left side and the right side of the lamp body, and the two rotating shafts are respectively and rotatably connected to the upper ends of the left side and the right side of the support; lifting motor and rotating electrical machines are servo motor, accessible remote control, through the height of lifting motor and screw rod lift adjustable face light, through the rotating electrical machines can adjust the rotation angle of face light in the plane, the lamp body is in the rotation angle that can adjust vertical direction about the support, can accurate adjustment face light shine the position on the stage through the adjustment in the three position of long-range face light, can satisfy high-quality stage lighting effect to only need install general position during the installation, just can reach accurate position through remote adjustment, reduced installer's working strength, improved debugging efficiency.

Preferably, a fixing frame is arranged inside the electric cabinet, the fixing frame is located in the middle of the electric cabinet, the rotating motor is fixed in the fixing frame, the output end of the rotating motor penetrates through the upper surface of the electric cabinet, a rotating disc is arranged at the output end of the rotating motor, and the support is fixed on the rotating disc; the rotating motor is a servo motor and can drive the support to accurately adjust the rotating angle in a plane.

Preferably, a turnover motor, a first gear and a second gear are arranged inside a frame of the bracket, the turnover motor is fixed at the left end of the bottom of the bracket, the first gear is fixed at the output end of the turnover motor, the second gear is arranged at the upper end of the left side of the bracket and is fixed on the rotating shaft at the left side, and the first gear and the second gear are connected through a belt; the turnover motor is a servo motor and can be remotely controlled, and the lamp body can be driven by the turnover motor to rotate in a vertical plane so as to accurately control the irradiation position of the lamp body in the vertical direction.

Preferably, a switching control board, an anti-theft alarm, a positioner and a fire alarm are further arranged inside the frame of the support, the switching control board is vertically fixed on the right side of the support, the anti-theft alarm, the positioner and the fire alarm are fixed on a fixing plate on the right side of the bottom of the support, the anti-theft alarm, the positioner and the fire alarm are connected with the switching control board through connecting wires, and a plurality of switching ports and a plurality of radiating fins are arranged on the switching control board; the anti-theft alarm and the locator are provided with independent switches, the anti-theft alarm and the locator can be turned off when the surface light lamp is used, and the anti-theft alarm and the locator can be turned on when the surface light lamp is not used, so that the surface light lamp can be prevented from being stolen and tracking after being stolen; the fire alarm is also provided with an independent switch, is opened when the surface light lamp is used, is used for detecting the ignition condition of electric wires and electronic components caused by the long-time use of the surface light lamp, is convenient to find in time, processes in time and reduces loss.

Preferably, the electric cabinet and the lifting frame are provided with heat dissipation devices, each heat dissipation device of the electric cabinet comprises a box body heat dissipation fan and a box body heat dissipation port, the box body heat dissipation ports are formed in the side faces of the left side and the right side of the electric cabinet, the four box body heat dissipation fans are arranged on the left side and the right side of the inside of the electric cabinet, the four box body heat dissipation fans are opposite to the box body heat dissipation ports, and the box body heat dissipation fans and the box body heat dissipation ports are mainly used for dissipating heat of the main control board and the rotating motor, so that the rotating motor and electronic elements on the main control board are prevented from being damaged due to heat accumulation generated when the main control board and the rotating motor work; the heat abstractor of crane includes crane radiator fan and crane thermovent, the crane thermovent distribute in on four sides of crane, crane radiator fan sets up in the right side the inboard of crane thermovent, crane radiator fan and crane thermovent are used for dispelling the heat to elevator motor.

Preferably, the electric cabinet is further provided with a main control panel, an external interface and a parameter setting unit, the main control panel is vertically fixed at the rear side inside the electric cabinet, the parameter setting unit is arranged on the rear side surface of the electric cabinet, the parameter setting unit comprises a display screen and four adjusting buttons arranged below the display screen, the external interface is arranged on the front side surface of the electric cabinet, the external interface comprises a power interface, a signal input interface and a signal output interface, the right side of the power interface is further provided with a power switch, and the power switch, the external interface and the parameter setting unit are all connected with the main control panel through connecting wires; the main control board is used for connecting and transmitting power and signals among all the parts and transmitting instructions among the parts through remote control, the parameter setting unit is used for setting parameters such as the intensity and the tone of light, the power interface is used for connecting a power line to electrify the whole surface light lamp, the signal input interface is used for connecting a signal line to communicate the signal transmission of the whole surface light lamp and the remote control console, and the signal output interface is used for being connected with other lamps or equipment.

Preferably, the lamp body comprises lamp caps, two lamp shells, two light-emitting elements, heat dissipation units and heat dissipation windows, the lamp shells are arranged in the U-shaped groove of the support, the lamp caps are fixed at the upper ends of the lamp shells, the two heat dissipation windows are respectively arranged at the front side and the rear side of the lower end of the lamp shells, the lower ends of the inner parts of the lamp shells are provided with light-emitting element fixing chambers, the light-emitting elements are fixed in the light-emitting element fixing chambers, and the heat dissipation units are distributed at the outer sides of the light-emitting element fixing chambers; the lamp comprises a lamp body, a light-emitting element, a heat dissipation unit and a heat dissipation window, wherein the light-emitting element is used for emitting light, the lamp body is used for protecting components inside the lamp body, the heat dissipation unit is used for blowing away or pumping away heat generated by the components inside the lamp body to avoid aggregation, and the heat dissipation window is used for diffusing the heat inside the lamp body to the outside.

Preferably, the heat dissipation unit includes a lamp body heat dissipation fan, a heat dissipation fan and a heat dissipation plate, the lamp body heat dissipation fan is fixed on the rear side surface of the light emitting element fixing chamber, the heat dissipation fan is fixed on the right side surface of the light emitting element fixing chamber, an air suction opening of the heat dissipation fan extends into the light emitting element fixing chamber, an air outlet of the heat dissipation fan faces the front side of the lamp body, and the heat dissipation plate is fixed at the bottom of the light emitting element fixing chamber; the heat dissipation fan is used for guiding heat in the lamp shell to the heat dissipation window, then the heat dissipation window is diffused to the outside, the heat dissipation fan is used for extracting heat in the light-emitting element fixing chamber, then the heat dissipation window is diffused to the outside, and the heat dissipation plate is used for diffusing the heat in the light-emitting element fixing chamber to avoid aggregation.

Compared with the prior art, adopt above-mentioned scheme, the utility model discloses a remote control elevator motor, rotating electrical machines and the work of swinging electrical machines, come the sharp orientation and the rotation angle of accurate adjustment surface light lamp on the perpendicular and rotation angle on the horizontal plane, realize the position of shining of accurate regulation surface light lamp on the stage, the problem that can't high quality satisfy the stage effect has been solved, and accurate adjustment can be realized through remote control, the process of the long-time surface light lamp mounted position debugging of installer has been reduced, installer's working strength and danger have been alleviateed, and the work efficiency is improved.

The utility model discloses set up crane thermovent and crane radiator fan on the crane, set up box thermovent and box radiator fan on the electric cabinet, set up heat dissipation window, lamp body radiator fan, radiator fan and heating panel on the lamp body, set up the fin on the switching control panel, set up heat abstractor through a plurality of positions, realize all-round heat dissipation to whole surface light, solved the poor problem of surface light lamp radiating effect, improved the life of surface light; and set up burglar alarm, locator and fire alarm in the support, improved the factor of safety of a surface light lamp, solved the problem that the factor of safety of a surface light lamp is low.

Drawings

For a clearer explanation of the embodiments or technical solutions in the prior art, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a general schematic view of the structure of the present invention;

fig. 2 is a schematic structural view of the lifting frame of the utility model;

FIG. 3 is a schematic view of the internal structure of the electric cabinet of the present invention;

fig. 4 is a schematic view of the internal structure of the bracket of the present invention;

fig. 5 is the schematic view of the internal structure of the lamp body of the present invention.

The reference numbers indicate: the device comprises a lifting frame 1, an electric cabinet 2, a support 3, a lamp body 4, a sliding sleeve 11, a lifting motor 12, a screw rod lifter 13, a lifting frame heat dissipation fan 14, a lifting frame heat dissipation port 15, a sliding rod 21, a rotating motor 22, a box body heat dissipation fan 23, a main control panel 24, a box body heat dissipation port 25, a turnover motor 31, a first gear 32, a second gear 33, a fire alarm 34, an anti-theft alarm 35, a positioner 36, a heat dissipation window 41, a lamp body heat dissipation fan 42, a heat dissipation plate 43, a heat dissipation fan 44 and a luminous element fixing chamber 45.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The use of the terms "fixed," "integrally formed," "left," "right," and the like in this specification is for illustrative purposes only, and elements having similar structures are designated by the same reference numerals in the figures.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1: as shown in fig. 1, the surface light capable of accurately adjusting the irradiation position comprises a lifting frame 1, an electric cabinet 2, a bracket 3 and a light body 4, wherein an external interface and a power switch are arranged on the front side of the electric cabinet 2, a sliding rod 21 is arranged at the bottom of the electric cabinet 2, and a sliding sleeve 11 is arranged at the top of the lifting frame 1; before the face light lamp uses, need carry out the installation and debugging, set up the basic parameter of face light lamp earlier, then fix the lamp on approximate position according to the particular case of stage, then connect the one end of power cord and signal line on external interface, the other end of power cord is connected on the socket, and the other end of signal line is connected on remote control platform.

Then turn on switch, according to the effect of shining of stage through the height and the angle of shining of remote adjustment facial light, make the stage demonstrate high-quality effect, as shown in fig. 2, be provided with elevator motor 12 and screw rod lift 13 in the crane 1, elevator motor 12 work drives the screw rod of screw rod lift 13 and reciprocates, thereby drive electric cabinet 2 and reciprocate, slide bar 21 also slides from top to bottom in sliding sleeve 11 simultaneously, and then drive support 3 and lamp body 4 and reciprocate, the rotating electrical machines adopts servo motor, the distance that can accurate control screw rod goes up and down, thereby realize the accurate regulation and control of facial light on mounting height.

After the height is adjusted in place, the angles of the headlamp in the horizontal direction and the vertical direction need to be adjusted, as shown in fig. 3, a rotating motor 22 is arranged in an electric cabinet 2, the rotating motor 22 can drive a bracket 3 to rotate in the horizontal direction through rotation, so that a lamp body 4 is driven to rotate in the horizontal direction, and the rotating motor 22 also adopts a servo motor, so that the rotation angle of the headlamp in the horizontal direction can be accurately controlled; as shown in fig. 4, set up upset motor 31, first gear 32 and second gear 33 in support 3, upset motor 31 work drives first gear 32 and rotates to drive second gear 33 and rotate, and then drive left pivot and rotate, and then drive lamp body 4 and rotate, upset motor 31 also adopts servo motor, the rotation angle of control light lamp in vertical direction that can be accurate.

Through the height in the vertical direction and the angle adjustment in the vertical direction and the horizontal direction, the position of the light irradiated on the stage can be controlled accurately, the heat of the working equipment needs to be dissipated in the adjusting process, as shown in fig. 2, the crane heat dissipation fan 14 needs to be started to diffuse the heat generated by the lifting motor 12 during the working process through the crane heat dissipation port 15, as shown in fig. 1 and 3, the box heat dissipation fan 23 in the electric cabinet 2 needs to be started, the heat generated by the main control panel 24 and the rotating motor 22 needs to be diffused through the box heat dissipation port 25, as shown in fig. 1 and 5, the lamp body heat dissipation fan 42 needs to be started to diffuse the heat in the lamp housing and the heat diffused from the heat dissipation plate 43 to the outside through the heat dissipation window 41, the heat dissipation fan 44 needs to diffuse the heat generated in the light-emitting element fixing chamber 45 through the heat dissipation window 41, and the heat generated by the whole equipment is ensured not to be gathered, reduce the damage to the equipment parts and prolong the service life of the equipment.

Example 2: the difference between this embodiment and embodiment 1 is that, as shown in fig. 2, in order to save energy during the use of the surface light, after the position of the surface light is adjusted, the lifting motor 12 does not work any more, the lifting frame heat dissipation fan 14 can be turned off, and the lifting motor 12 is turned on again when working; as shown in fig. 3, the rotating motor 22 does not work any more, and only the main control board 24 works in the electric cabinet 2, so that a temperature detection device can be arranged in the electric cabinet 2 to monitor the temperature in the electric cabinet 2 in real time, and then the number of the box body cooling fans 23 is selected to be started according to the feedback of the temperature; the power saving can be achieved by selectively shutting down the crane radiator fans 14 and by controlling the number of the box radiator fans 23 that are turned on by temperature.

Example 3: the difference of this embodiment and embodiment 1 is, as shown in fig. 4, in order to improve the security of surface light lamp in the use, set up fire alarm 34 in support 3, when surface light lamp leads to the circuit to catch fire because long-time use or circuit is ageing, fire alarm 34 can in time give remote control console with fire alarm signal transmission, lets the people in time discover, in time handles, reduces the loss.

Example 4: the embodiment is different from embodiment 3 in that, as shown in fig. 4, in order to improve the safety of the surface light when not in use, the burglar alarm 35 and the locator 36 are arranged in the bracket 3, when the surface light is not in use, the switch of the burglar alarm 35 and the locator 36 is turned on, when the surface light is stolen, the burglar alarm 35 sends an alarm signal to a remote terminal such as a mobile phone, then the position fed back by the locator 36 can be checked from the remote terminal, the surface light is tracked, and therefore the safety of the surface light when being stored is improved.

Example 5: the embodiment is different from the embodiment 1 in that, for the occasions where stages at different positions need to be switched, in order to reduce the number of the surface lights and the installation workload, the number of the surface lights can be installed as required, and then the positions and angles of the surface lights which need to be adjusted during the switching of the stages are simulated in advance, and in the normal use process, the irradiation needs of the stages at different positions can be met only by remotely adjusting the positions and the rotation angles of the surface lights during the switching of the stages; the angle adjustment of the surface light lamps with fewer groups replaces the switching of multiple groups of surface light lamps, so that the using quantity of the surface light lamps is reduced, and the workload of installation and collection is reduced.

The utility model discloses a theory of operation: after basic parameters of light are set, approximate installation positions are fixed, and power lines and signal lines are connected, accurate position adjustment and light effect debugging are started, a lifting frame cooling fan, a box body cooling fan, a lamp body cooling fan and a cooling fan are started to cool the equipment, then a screw rod elevator is driven by a lifting motor to move up and down, so that a lamp body is driven to move up and down, the specific height of the lamp body is adjusted, a support is driven by a rotating motor to rotate on a horizontal plane, so that the lamp body is driven to rotate on the horizontal plane, the irradiation angle of the lamp body on the vertical plane is adjusted, the position and the irradiation angle of the lamp body are adjusted for multiple times by combining the effect of light irradiation on a stage, and finally an ideal effect is achieved;

after the irradiation position is adjusted, the normal use stage is entered, the heat radiation fans of the lifting frame can be closed, the number of the heat radiation fans of the box body is selectively closed, and the fire alarm is started; after the use is finished, the surface light is placed in a warehouse for storage, and the anti-theft alarm and the positioner are started.

It should be noted that the above technical features are continuously combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; moreover, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. A surface light capable of accurately adjusting an irradiation position is characterized by comprising a lifting frame, wherein a lifting motor and a screw rod lifter are sequentially arranged in a frame of the lifting frame from left to right, the output end of the lifting motor is connected with the left end of the screw rod lifter, the screw rod lifter penetrates through the upper surface and the lower surface of the lifting frame, an electric cabinet is fixedly arranged at the upper end of the screw rod lifter, four corners at the bottom of the electric cabinet are respectively and vertically provided with a sliding rod, four corners at the upper end of the lifting frame are respectively and fixedly provided with a sliding sleeve, and the lower end of the sliding rod is slidably sleeved in the sliding sleeve; the lamp comprises an electric cabinet, and is characterized in that a rotating motor is arranged in the electric cabinet, a support is arranged at the output end of the rotating motor, the support is of a U-shaped structure and is positioned above the electric cabinet, a lamp body is arranged in a U-shaped groove of the support, rotating shafts are arranged on the left side and the right side of the lamp body, and the two rotating shafts are respectively and rotatably connected to the upper ends of the left side and the right side of the support.

2. The surface light lamp capable of accurately adjusting the irradiation position according to claim 1, wherein a fixing frame is arranged inside the electric cabinet, the fixing frame is located in the middle of the electric cabinet, the rotating motor is fixed in the fixing frame, the output end of the rotating motor penetrates through the upper surface of the electric cabinet, a rotating disc is arranged at the output end of the rotating motor, and the support is fixed on the rotating disc.

3. The surface light lamp capable of accurately adjusting the irradiation position according to claim 1, wherein a turnover motor, a first gear and a second gear are arranged inside a frame of the support, the turnover motor is fixed at the left end of the bottom of the support, the first gear is fixed at the output end of the turnover motor, the second gear is arranged at the upper end of the left side of the support and is fixed on the rotating shaft at the left side, and the first gear and the second gear are connected through a belt.

4. The utility model provides a can accurate regulation shine position's face light, a serial communication port, still be provided with switching control panel, burglar alarm, locator and fire alarm inside the frame of support, the switching control panel is vertical to be fixed in the right side of support, burglar alarm, locator and fire alarm are fixed in on the fixed plate on the bottom right side of support, and burglar alarm, locator and fire alarm all through the connecting wire with the switching control panel links to each other, be provided with a plurality of switching mouths and a plurality of fin on the switching control panel.

5. The surface light lamp capable of accurately adjusting the irradiation position according to claim 1, wherein the electric cabinet and the lifting frame are both provided with heat dissipation devices, each heat dissipation device of the electric cabinet comprises a cabinet body heat dissipation fan and a cabinet body heat dissipation port, the cabinet body heat dissipation ports are arranged on the side surfaces of the left side and the right side of the electric cabinet, the number of the cabinet body heat dissipation fans is four, the four cabinet body heat dissipation fans are oppositely arranged on the left side and the right side of the inside of the electric cabinet, and the cabinet body heat dissipation fans are opposite to the cabinet body heat dissipation ports; the heat dissipation device of the lifting frame comprises lifting frame heat dissipation fans and lifting frame heat dissipation ports, the lifting frame heat dissipation ports are distributed on four side faces of the lifting frame, and the lifting frame heat dissipation fans are arranged on the right side of the inner side of the heat dissipation ports.

6. The utility model discloses a can adjust face light of shining position accurately, a serial communication port, the electric cabinet still is provided with main control panel, external interface and parameter setting unit, the main control panel is vertical to be fixed in the inside rear side of electric cabinet, parameter setting unit set up in on the trailing flank of electric cabinet, parameter setting unit includes the display screen and sets up four adjustment button below the display screen, external interface set up in on the leading flank of electric cabinet, external interface includes power source, signal input interface and signal output interface, power source's right side still is provided with the switch, external interface and parameter setting unit all link to each other with the main control panel through the connecting wire.

7. The surface light lamp capable of accurately adjusting the irradiation position according to claim 1, wherein the lamp body comprises a lamp cap, a lamp housing, a light emitting element, two heat dissipation units and two heat dissipation windows, the lamp housing is disposed in the U-shaped groove of the bracket, the lamp cap is fixed to the upper end of the lamp housing, the two heat dissipation windows are respectively disposed on the front side and the rear side of the lower end of the lamp housing, a light emitting element fixing chamber is disposed at the lower end of the interior of the lamp housing, the light emitting element is fixed in the light emitting element fixing chamber, and the heat dissipation units are distributed outside the light emitting element fixing chamber.

8. The surface light lamp of claim 7, wherein the heat dissipation unit comprises a lamp body heat dissipation fan, a heat dissipation fan and a heat dissipation plate, the lamp body heat dissipation fan is fixed on the rear side of the light emitting element fixing chamber, the heat dissipation fan is fixed on the right side of the light emitting element fixing chamber, an air suction opening of the heat dissipation fan extends into the light emitting element fixing chamber, an air outlet of the heat dissipation fan faces the front side of the lamp body, and the heat dissipation plate is fixed at the bottom of the light emitting element fixing chamber.

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