KR101033808B1 - lighting for up down type - Google Patents

Abstract

The present invention relates to a height-adjustable lighting apparatus, and more particularly, to the height-adjustable lighting apparatus that can be installed on the ceiling of a room with a high ceiling to adjust the height of the lighting fixture, and to easily replace the bulb. It is about.

Height-adjustable lighting device of the present invention, the top plate (1) is provided to be fixedly mounted on the ceiling, in conjunction with the top plate to form a predetermined space on the inside and the ball bearing for inserting both ends of the rotating shaft (11) of the drive motor (10) A main body consisting of first and second side plates (2, 3) fixedly mounted to (5); and a through hole for accommodating the rotating shaft 11 of the drive motor in the center thereof, and extending the outer edge of the through hole in one direction. And the first and second bushings 21 and 31, and are formed of a plurality of bolt inlet holes 22 and 32 arranged at equal intervals, and a winding drum for winding the drive motor 10 and the electric wire coupled to the rotating shaft ( 50, the first and second rotors 20 and 30 interposed in the space therebetween, and the through hole to be fitted to the second bushing 31 of the second rotor, a plurality of wires for supplying power The contact portion 41 fixedly fastened with a conductor is arranged and spaced apart from a predetermined space so that the fixing member 45 can be retracted. A fixed plate 40 having a plurality of pairs of receiving protrusions 42 formed therein; and a control box 80 for collectively controlling the operation of the driving motor 10 to implement the lifting operation of the luminaire; and Both ends are fixedly mounted to the first and second side plates (2, 3), and the camshaft (70) which the central shaft (72) consisting of continuous guide grooves (71) rotates itself; And a driving roller 62 for inducing flexible movement during winding and drawing operations of the wires 7 to actively prevent the wires from being separated, and the shaft hole 65 to accommodate the central shaft 72 of the cam shaft. The moving block 60 is inserted into and inserted into the rod bar guide 61 formed to partially project the upper and lower central portions into a predetermined space punched on the upper surface, and fixed by the lid 63.

According to the height-adjustable lighting device of the present invention implemented as described above, the power transmission efficiency is remarkably superior to other reduction gears to maximize energy efficiency, and the wires are stacked side by side in a side by side arrangement and more stable wires. It can be wound up.

In addition, since the fixing plate for supplying power is not installed inside the rotating body and in close contact with the side of the second rotating body, it is possible to maintain a smooth supply of electricity, and also has an advantageous effect in future repair and maintenance.

Elevating device, height adjustable lighting device, winding drum

Description

Adjustable height lighting device {lighting for up down type}

The present invention relates to a height-adjustable lighting apparatus, and more particularly, to the height-adjustable lighting apparatus that can be installed on the ceiling of a room with a high ceiling to adjust the height of the lighting fixture, and to easily replace the bulb. It is about.

In general, high places such as gymnasiums, auditoriums, hotel lobby and factory ceilings are equipped with aerial lights, which are not only necessary to replace the bulbs at any time, but also to keep clean at all times according to the limited lifetime of the bulbs. The aerial lightings installed in hotel lobbies should be cleaned periodically.

Due to the structural features of the light bulb is placed in a high light bulb, such as the height of the light bulb had to work using a crane or a ladder for work to clean and replace.

However, the conventional method is more inconvenient than working on the ground, and the worker has been exposed to the risk of heights such as electric shock and fall, and also many problems such as increased maintenance costs due to the use of additional equipment.

Recently, a number of liftable lighting fixtures have been developed to solve the above problems, and the liftable lighting fixture has a main body 1 fixed on the ceiling as shown in FIG. 1, and a lower portion of the main body 1. A lifting body 4 coupled to and equipped with a light bulb 3, and one end of which is fixed to an upper side of the lifting body 4, and the other end of which is wound on an inner installation space of the main body 1; The wire 6 provided in the state wound on the drum 6 by a predetermined length, and the drum 6 to raise and lower the lifting body 4 by unwinding and winding the wire 2 on the winding drum 6. The stationary motor 5 which is axially coupled to) is configured.

In addition, on the inner installation space of the main body 1, a wire 2 having one end connected to the lifting body 4 forms a vertical transfer line at the center of the main body 1 and at the same time a drum fixed to the side of the installation space ( 6) the first guide pulley (7) is installed in the center to be wound on the top and the second guide pulley (8) is installed on the side is configured to change the direction of the wire.

The lighting is configured to drive the stationary motor (5) by using a wired button or a wireless remote control provided on the ground, the drum (6) received the power of the stationary motor (5) loosen the wire (2) By lifting, the lifting body 4 is lowered to the ground, and there is an advantage that the light bulb 3 can be safely and conveniently replaced, cleaned, and repaired.

As described above, the conventional lifting type lighting device is not easy to wind by arranging the wires side by side, so the winding state is very unstable, and as the gears are formed on one side of the drum, there is a fear that the wires may be damaged when they are in contact with the gears. In addition, since the driving force generated from the geared motor is transmitted to the rotating plate through the drive gear, the energy transfer efficiency is remarkably low, so a motor with a large capacity must be used, and the contact part for transmitting electricity is fixed in two points. Of course, the width of the drum is enlarged, of course, the contact is not smooth, it is separated from the drum has a disadvantage in mounting.

In addition, the conventional apparatus has to use at least two or more due to the small number of contacts, and frequently escape from the drum when the wire is wound, and also the wire is separated from the drum when the length of the wire is stretched or caught by the hand during the lowering of the wire In addition, there is no function to monitor the operation of a separate electrical overload and the motor is exposed to safety accidents unprotected.

The present invention has been invented to actively solve the above problems, in the configuration of the height-adjustable lighting device of the present invention; The height-adjustable lighting device, the top plate is provided to be fixed to the ceiling, the first plate and the second side plate is fixed to the ball bearing in order to insert a rotation shaft of the drive motor to form a predetermined space in connection with the top plate, respectively. A main body is formed in the center, and a through hole for accommodating the rotating shaft of the driving motor is formed, and the outer edge of the through hole extends in one direction to constitute the first and second bushings, and includes a plurality of bolt inlet holes arranged at equal intervals. First and second rotors having a winding drum for winding the coupled drive motor and the electric wires interposed therebetween; and through-holes are drilled so as to be fitted to the second bushings of the second rotors, and a plurality of the motors are supplied to supply power. A contact plate configured to fasten the wires of the conductor by a conductor, and a fixed plate having a plurality of pairs of receiving protrusions formed by separating a predetermined space so that the fixing member can be inserted therein; and driving Control box for collectively controlling the operation of the motor to implement the lifting operation of the luminaire; and, the first and second side plates are fixedly mounted at both ends, the camshaft is a self-rotating center shaft consisting of a guide groove; And driving rollers for inducing flexible movement during winding and drawing out of the wires to actively prevent the wires from being separated, and the shaft hole is drilled to accommodate the central shaft of the camshaft, and the upper surface is drilled in a predetermined space. And a moving block for additionally inserting a round bar guide formed to partially protrude the lower center portion and fixing the cover with a cover.

In addition, the rotating shaft of the drive motor is fixed to each of the first bushing and the second bushing of the second rotating body is configured so that the first and second rotating body and the driving motor can perform the same rotational movement in parallel, To solve this problem, the chain shaft is attached to one end of the rotation shaft and the cam shaft of the drive motor so that the chain is mounted so that the rotational force of the drive motor is transmitted to the cam shaft by the chain to enable the same rotational movement thereof. By means.

According to the height-adjustable lighting device of the present invention implemented as described above, the power transmission efficiency is remarkably superior to other reduction gears to maximize energy efficiency, and the wires are stacked side by side in a side by side arrangement and more stable wires. It can be wound up.

In addition, since the fixing plate for supplying power is not installed inside the rotating body and in close contact with the side of the second rotating body, it is possible to maintain a smooth supply of electricity, and also has an advantageous effect in future repair and maintenance.

Hereinafter, a configuration for implementing the height-adjustable lighting device 100 of the present invention with reference to the accompanying drawings as follows.

1 is a block diagram of a lifting type lighting device according to the prior art, Figure 2 is a perspective view of a height-adjustable lighting device is configured according to a preferred embodiment of the present invention, Figure 3 is a preferred embodiment of the present invention 4 is an exploded perspective view of a height-adjustable lighting device configured by the above, FIG. 4 is a main structural view showing the main parts of the present invention in detail, FIG. 5 is another combined perspective view showing the main parts of the present invention in detail, and FIG. Fig. 7 is a cross-sectional view showing the main portion of the present invention, and a cross-sectional view of the height-adjustable lighting device according to the present invention.

The present invention is composed of a main body to form a suitable internal space to be installed embedded in the ceiling as shown in Figure 2 to 5, the drive motor 10 and the rotating shaft 11 in the interior space; A first rotating body 20 and a second rotating body 30; Fixing plate 40; Winding drum 50; Moving block 60 and camshaft 70; And a control box 80 for controlling them collectively.

The main body includes a housing having a shape in which a lower surface and a front and a rear surface are opened, and accommodates both ends of a plate-shaped upper plate 1 fixed to a ceiling, a predetermined driving motor 10, and a rotation shaft 120 connected thereto. It consists of the first and second side plates (2, 3).

The first and second side plates 2 and 3 respectively have ball bearings 5 formed in opposing inner spaces so that both ends of the rotating shaft 11 of the driving motor 10 are fixedly disposed, and one cutout is provided in the side plate predetermined space. By puncturing the control box 80 to be built-in, as well as the overall driving of the device, it is configured to be remotely controlled by receiving a remote control signal.

The drive motor 10 is a component that provides direct rotational force to draw or wind wires (cables 7). As described above, the rotation shafts 11 are integrally mounted at both ends of the main body 1 and 2. It is fitted in series via the ball bearings 5 of the side plates 2, 3. That is, as the rotational force of the rotating shaft 11 is transferred to the drive motor 10, the driving motor and the rotating shaft are in parallel to the same rotational motion, and the rotational force is transmitted to the first and second rotating bodies 20 and 30 in the same manner. The first and second bushings 21 and 31 are fixedly coupled to both ends of the rotary shaft 11, respectively.

Predetermined through-holes are drilled in pairs to engage with the first and second bushings 21 and 31 at both ends of the rotary shaft 11, and a chain sprocket 15 is mounted at one end of the rotary shaft. Interaction with the chain sprocket 75 of the camshaft 70 to be described enables smooth chain drive. In addition, one side of the rotating shaft is the first rotating body 20, and the other side of the second rotating body 30 and the fixed plate 40 is inserted and supported in order, and in the state supporting them, both ends of the rotating shaft ball bearing ( 5) is entered in parallel to the rotational movement. As a result, such a rotational movement is arranged to coincide with a pair of through holes drilled in the first bushing 21 and a pair of through holes drilled in the second bushing 31, respectively. By binding to each other with a separate fixing means, such as bolts can be transmitted to the first and second rotating bodies 20 and 30 in the same manner.

The first rotating body 20 and the second rotating body 30 drills through-holes in the center thereof to receive one end of the rotating shaft 11 of the drive motor 10, and forms an outer edge of the through-hole in one direction. Each of the first bushing 21 and the second bushing 31 is configured, and a plurality of bolt inlet holes 22 and 32 are disposed around the first and second bushings in which the rotating shaft is inserted, and the second bushing 31 is disposed. Since a large number of circular copper inflow holes 33 are formed around the vicinity, current can be smoothly transferred, and copper (copper) having high electrical conductivity is usually inserted radially into the copper inflow hole 33. By being in close contact with the contact portion 41 of the fixed plate 40 to be described, the electricity transmitted by the contact portion was transferred to the lighting device (not shown) through the copper wire.

The winding drum 50 is a component that can be wound through the wire 7 in the space between the first and second rotating bodies 20 and 30, and does not damage the wire coating when winding or unwinding the wire. The inner side is penetrated to accommodate the driving motor 10, and as shown in FIG. 3, a plurality of nut casings 51 are formed on both outer peripheries so as to correspond to the bolt inlet holes 22 and 32. FIG.

The nut casing 51 is a nut member is formed so that it can be engaged with the bolt (not shown) in the inner space, the bolt inlet 22, 32 of the first and second rotating bodies (20, 30) Both ends of the winding drum 50 are integrally formed with the first and second rotating bodies 20 and 30 by being fastened to each other by a coupling member such as a bolt to be disposed at a corresponding position to implement the same rotational motion.

On the other hand, one or more limit switches may be additionally installed to more effectively operate the height-adjustable lighting device 100 of the present invention. In general, a limit switch (not shown) is a component that controls the driving motor 10 by detecting a winding state of a wire wound on the winding drum 50, and when the wire is drawn out of the winding drum and exhausted, the switch The automatic opening and closing of the driving motor 10 is to enable the operation of the organic operation, which is similar to the same as the prior art, detailed description thereof will be omitted.

The fixing plate 40 is a predetermined through hole is drilled in the center so that it can be fitted to the second bushing 31 of the second rotating body, a plurality of wires (not shown) are fixed with bolts as shown in the drawing The bolt is to serve as a conductor, and a plurality of such wires are connected to the control box 80 itself to induce the flow of current. In addition, reference numeral 41 denotes a contact portion, which allows one end of the bolt fixed with the wire to be fixed with a nut as shown in FIG. 3 so as to be in contact with the copper wire of the second rotating body 30, By transferring a current to the copper wire that is in close contact with the electricity by the bolt that conducts electricity as a result it is properly supplied with electricity to the end of the wire connected to the lighting fixture and located in the winding drum (50).

The fixing plate 40 is fitted to the second bushing 31 of the second rotating body 30 to fix the plurality of fixing members 45 introduced through one side plate of the main body. When the fixing member 45 is fitted into the center space of the plurality of receiving protrusions 42 formed on the fixing plate 40 to pull out the nut to the outside, the extracted nut is brought into contact with each receiving protrusion 42. The end of the 45 is fixed, whereby the fixing plate 40 is fixed to the second body side plate 3 in the state of being fitted to the second rotating body 30, and of course, the contact portion formed on the other side of the fixing plate ( 41) As the end is more closely attached to the copper wire, the adhesion force is doubled, so that electricity can be applied more efficiently.

Both ends of the cam shaft 70 are fixed to each other via the first and second side plates 2 and 3, and a guide groove 71 having an appropriate depth is continuously formed in the central axis 72 formed in the longitudinal direction. Configure it to rotate on its own. In particular, one side end of the camshaft 70 is further fixedly mounted to the chain sprocket 75 so as to be interconnected by the chain sprocket 15 and the chain 90 of the above-described rotary shaft 11 of the rotary shaft 11 It is possible to rotate the camshaft 70 at the same time by the rotational force.

The movable block 60 is large drive roller 62; Round bar guide 61; The cover 63 is composed of a mutual coupling, the drive roller 62 has a groove formed along the periphery of the wire 7 so that the wire 7 is not detached to the outside to make the drawing and winding of the wire more stable Induction, the round bar guide 61 is formed in the form of the upper and lower parts of the protruding part so that the protruding portion is accurately engaged with the guide groove 71 of the cam shaft 70, the cover 63 is the round bar guide ( 61) It is fixed to the upper side and configured to prevent the removal of the round bar guide.

In addition, the shaft block 65 and the fixing hole 64 are separated and drilled in the movable block 60, and the central shaft 72 of the cam shaft is inserted into the shaft hole 65, and the fixed hole 64 is fixed in length. By inserting and inserting the support bar 66, both ends of which are fixed to the first and second side plates 2 and 3 of the main body, as well as the stable arrangement of the moving block 60, as well as the rotation of the central axis 72 It completely assists the left and right flow of the moving block.

The control box 80 implements organic driving of each component in accordance with a predetermined signal as in a conventional device device. In addition, by separately forming a remote control receiver (not shown) to remotely control the falling and rising operation of the luminaire by the remote control signal by rotating the driving motor 10 according to the user's operation, the luminaire is a certain distance You can get on and off.

Hereinafter, the present invention having the above-described configuration will be embodied according to the most preferred embodiment, and will be described in detail with respect to the action and effect caused thereby. Prior to this, terms or words used in this specification and the following claims are not intended to be construed as limited to conventional or dictionary meanings, and the inventors have used the concept of terminology in order to best describe their own invention. It may be properly defined, 'and should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Height-adjustable lighting device 100 of the present invention,

The first plate 1 is provided to be fixed to the ceiling, and the first plate is fixed to the ball plate 5 in order to insert both ends of the rotating shaft 11 of the drive motor 10 to form a predetermined space in connection with the top plate. A main body consisting of two side plates (2, 3); and a through hole for accommodating the rotating shaft 11 of the driving motor in the center thereof, and extending the outer edge of the through hole in one direction to form the first and second bushings (21, 31). And a plurality of bolt inlet holes 22 and 32 arranged at equal intervals, the driving motor 10 having a rotating shaft coupled thereto, and a winding drum 50 for winding the electric wire interposed therebetween. And a second hole (20, 30); and the contact portion 41 is drilled through the hole to be fitted to the second bushing 31 of the second rotating body, and fastened a plurality of electric wires with a conductor to supply power Is arranged, a plurality of pairs of receiving projections 42 formed by spaced apart a predetermined space so that the fixing member 45 can be retracted A fixed plate 40 to be engaged; and a control box 80 for collectively controlling the operation of the driving motor 10 to implement the lifting operation of the luminaire; and the first and second side plates 2 and 3. A camshaft 70 whose both ends are fixedly mounted and the central shaft 72 made of a continuous guide groove 71 rotates itself; And a driving roller 62 for inducing flexible movement during winding and drawing operations of the wires 7 to actively prevent deviation of the wires, and the shaft hole 65 to accommodate the central shaft 72 of the cam shaft. It is perforated, the movable block 60 is fixed to the cover 63 by additionally inserting the round bar guide 61 formed to protrude part of the upper and lower centers in a predetermined space perforated on the upper surface; It features.

Installing a remote control receiver configured to be connected to the control box 80 through one side of the main body, and when the user operates the remote control to transmit the schedule information to the remote control receiver, the drive motor 10 is rotated forward by grasping the transmitted information. Or the reverse rotation drive the luminaire to fall or rise a certain distance. When the user inputs a specific key provided on the remote control to lower the luminaire, a predetermined control code is transmitted from the remote control to the remote control receiver by the input, and the control code is supplied to the control box through the remote control receiver. The control code for lowering the instrument is recognized. As a result, the first and second rotating bodies 20 and 30 configured to be connected to the rotating shaft 11 of the driving motor are driven in one direction, and the wires 7 wound around the winding drum 50 are drawn out, and the luminaire is lowered by a predetermined distance. When all the wound wires are exhausted, the drawing operation is completed by the limit switch.

In the present invention, the use of a remote control capable of remote control as an example for inputting a control command is used as an example, but as another embodiment, a separate switch device connected by wire may be installed on the wall.

In the case where the lighting device is to be lowered from the height-adjustable lighting device of the present invention, when a control signal is input to the control box 80 by the operation of a down button or a remote controller, power is supplied to the driving motor 10. As the driving motor rotates in one direction by the application of power, the first and second rotating bodies 20 and 30 fixedly coupled to the rotating shaft by means are rotated as the rotating shaft 11 connected thereto is rotated. Rotating in the direction for lowering the luminaire, wherein the fixing plate 40 engaged with the second rotating body is disposed in place by the interaction of the receiving projection 42 and the fixing member 45.

When the drive motor 10 and the rotating shaft 11 is rotated, the cam shaft 70 connected to one side of the drive shaft and the chain 90 is rotated in the same direction, and according to the rotation of the cam shaft The central shaft 11 also has a rotational movement in parallel with the position change in the circular rod guide 61 introduced into the guide groove 71 of the central shaft, so that the moving block 60 of the present invention is the central shaft of the camshaft 70. The left and right reciprocating drive in the state mounted on the 72 and the support bar (66).

On the other hand, one end of the wire wound on the winding drum 50 is equipped with a lighting fixture installed so that power is applied, the other end is connected to the copper wire of the second rotating body 30 from the contact portion 41 of the fixed plate Electricity transmitted can reach the lighting fixture.

As the first and second rotors 20 and 30 rotate, the wires wound on the winding drum 50 are drawn out, and the drawn wires 7 are slowly lowered in a stable state in a state accommodated in the driving roller 62. do. When the lowering of the luminaire is completed, the limit switch provided inside the winding drum detects that the wires are all loose and transmits these signals to the control box to immediately cut off the power applied to the driving motor to stop the driving of the motor.

In addition, in the case of winding the wire to raise the lowered luminaire, the specific signal is transmitted to the control box by pressing the lift button or by operating the remote controller in the same way as when the luminaire is lowered. The drive motor 10 is rotated in the reverse direction. As the wire drawn out according to the reverse rotation of the driving motor is wound on the winding drum 50 again, the lighting device is raised, and the wire is engaged with the driving roller 62 to achieve accurate winding operation even when the lighting device is lifted up. In the present invention, although not shown separately, it is natural that another limit switch recognizes the completion of the rising of the luminaire so that the control box receives the corresponding signal and cuts off the power applied to the driving motor to stop the driving. Will do.

When the drive motor 10 and the rotating shaft 11 is rotated in the direction for winding the electric wire by applying the power in the above, the first and second rotating bodies 20 and 30 fixedly coupled to the rotating shaft by means rotate in the same direction. As a result, the lighting device is raised, and the fixing plate 40 engaged with the second rotating body is disposed in the same position as the lighting device is lowered by the interaction between the receiving protrusion 42 and the fixing member 45.

When the driving motor 10 and the rotating shaft 11 rotates in the direction for raising the lighting fixture, the cam shaft 70 connected to one side of the rotating shaft 11 and the chain 90 of the driving motor in the same direction As the camshaft rotates, the central shaft 72 also rotates in parallel with the rotation of the camshaft, and a position change occurs in the round bar guide 61 introduced into the guide groove 71 of the central shaft. ) Is left and right reciprocally driven while being mounted on the center shaft and the support bar of the cam shaft, which accommodates the center shaft 72 of the cam shaft in the shaft hole 65 of the moving block of the present invention, and the round bar guide therein. By allowing one end of the 61 to engage with the guide groove 71 formed on the surface of the central shaft, the movable block can be reciprocated left and right on the central shaft and the support bar according to its own rotation of the central shaft 72. This raises the luminaire As it would be a useful tool which can be stacked in alignment in parallel to the wire 7 which is wound around the take-up drum 50 in the horizontal direction.

1 is a block diagram of a height-adjustable lighting device according to the prior art.

Figure 2 is a combined perspective view of the height-adjustable lighting device configured according to an embodiment of the present invention.

Figure 3 is an exploded perspective view of a height-adjustable lighting device configured according to an embodiment of the present invention.

Figure 4 is a main part configuration diagram showing the main part of the present invention in detail.

Figure 5 is another perspective view showing the main portion of the present invention in detail.

Figure 6 is a sectional view of the main portion taken to extract the main portion of the present invention.

Figure 7 is a cross-sectional view of the height-adjustable lighting device of the present invention.

* Description of the symbols for the main parts of the drawings *

1: top plate 2: first side plate

3: second side plate 5: ball bearing

7: wire 10: drive motor

11: rotating shaft 15: chain sprocket

20: first rotating body 21: first bushing

22: bolt insertion hole 30: the second rotating body

31: 2nd bushing 32: bolt insertion hole

33: copper wire inlet hole 40: fixed plate

41: contact portion 42: receiving projection

45: fixing member 50: winding drum

51: nut casing 60: moving block

61: round bar guide 62: drive roller

63: cover 64: fixing hole

65 shaft hole 66 support bar

70: camshaft 71: guide groove

72: central axis 75: chain sprocket

80: control box 90: chain

100: height adjustable lighting device

Claims (6)

In constructing a height-adjustable lighting device embedded in the ceiling to induce the lifting operation of the luminaire, Height-adjustable lighting device 100, The first plate 1 is provided to be fixed to the ceiling, and the first plate is fixed to the ball plate 5 in order to insert both ends of the rotating shaft 11 of the drive motor 10 to form a predetermined space in connection with the top plate. The main body consisting of two side plates (2, 3); A through hole is formed in the center to accommodate the rotation shaft 11 of the drive motor, and the outer edge portion of the through hole is formed to extend in one direction to constitute the first and second bushings 21 and 31, and a plurality of bolt inlets arranged at equal intervals. First and second rotating bodies 20 and 30 having holes 22 and 32 interposed therebetween and a driving motor 10 having a rotating shaft coupled thereto and a winding drum 50 for winding the electric wire therebetween; A through hole is drilled so as to be fitted into the second bushing 31 of the second rotating body, and a contact portion 41 which fixes and fastens a plurality of electric wires with a conductor for supply of power is arranged, and the fixing member 45 is drawn in. A fixed plate 40 having a plurality of pairs of receiving protrusions 42 formed to be spaced apart from each other so as to be spaced apart; Control box 80 for implementing the lifting operation of the lighting fixture by collectively controlling the operation of the drive motor 10; And, A cam shaft 70 having both ends fixedly mounted to the first and second side plates 2 and 3 and having a central shaft 72 formed with two spiral guide grooves 71 intersecting in series; And A driving roller 62 is provided to prevent the cable from being separated during winding and drawing out of the electric wire 7, and the shaft hole 65 is drilled to accommodate the central shaft 72 of the cam shaft. Height-adjustable lighting device comprising a; a movable block (60) for inserting and inserting a round bar guide (61) formed so as to project the upper and lower centers in a predetermined space and fixed with a cover (63). The method of claim 1, The rotating shaft 11 of the drive motor is fixedly coupled to the first bushing 21 of the first rotating body and the second bushing 31 of the second rotating body to drive the first and second rotating bodies 20 and 30, respectively. Height adjustable lighting device, characterized in that the motor 10 is configured to perform the same rotational movement in parallel. The method of claim 1, Chain sprockets 15 and 75 are respectively attached to one end of the rotation shaft 11 and the cam shaft 70 of the drive motor to allow the chain 90 to be mounted so that the rotational force of the drive motor 10 is changed to the cam shaft by the chain. 70) height adjustable lighting device, characterized in that configured to enable their same rotational movement possible. delete delete The method of claim 1, The bolt inlet holes 22 and 32 of the first and second side plates are positioned to face nut casings 51 disposed at both ends of the winding drum 50, respectively, and are fastened with bolts to be fixed to each other. Adjustable lighting.

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