US20140182791A1

US20140182791A1 - Multipurpose sun shielding apparatus

Info

Publication number: US20140182791A1
Application number: US13/989,367
Authority: US
Inventors: Jin Hwan Lee
Original assignee: OUINOVATION CO Ltd
Current assignee: OUINOVATION CO Ltd
Priority date: 2011-09-20
Filing date: 2012-09-14
Publication date: 2014-07-03
Also published as: WO2013042903A2; KR101141516B1; WO2013042903A3

Abstract

Provided is a multi-purpose shading device with a multi-stage collapsible blind part, in which the blind part is rotatably configured so as to function as a shutter and an advertising board when it is rotated downwardly and to function as a signboard when it is rotated upwardly. The multi-purpose shading device including a blind part which is provide with a plurality of blind plates and formed into a multi-stage type so that a rear side blind plate is guided to a fore-end side blind plate so as to be extended or collapsed along the fore-end side blind part; a driving part which extends or collapse the blind part; a rotational part which rotates the blind part; and a control part which controls the driving part and rotational part.

Description

CROSS-REFERENCE(S) TO RELATED APPLICATIONS

The present invention claims priority of Korean Patent Application No. 10-2011-0094922, filed on Sep. 9, 2011, which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to a multi-purpose shading device, and more particularly to a multi-purpose shading device with a multi-stage collapsible blind part, in which the blind part is rotatably configured so as to function as a shutter and an advertising board when it is rotated downwardly and to function as a signboard when it is rotated upwardly.
2. Description of Related Art
In general, a shading device for shielding the sun and shutting out the rain is installed at a front door, a bicycle rack, a stair, a faucet or the like. The shading device functions to shield people entering a building and various articles displayed in the show window from sunlight. Further, the shading device allows a space of terrace to be more widely used. At the same time, the shading device gives salience to a visual image of a building or a store, thereby enhancing interior effect. Furthermore, the shading device provides outdoor places for relaxation or snack bar to visitors.
A conventional shading device is typically classified into a folding type and a fixed type. In case of the folding type, fabric or synthetic resin film is used, and its unfolded level can be adjusted manually or automatically. And in case of the fixed type, a fixed frame is provided at a wall or the like, and then a tent is installed thereon. Thus, the fixed type can cover only a fixed range at a fixed position.
Meanwhile, a shutter that is a kind of wall or door is a disaster prevention facility for preventing or minimizing loss of life and property due to robbery, fire or the like. The shutter formed of connected pipes or slates is moved up and down along a guide rail installed at both sides thereof. And the shutter is configured to be wound on a roller that is rotated by a driving means, and thus it can be moved up and down. A main body of the shutter has to be designed with a volume of the shutter to be wound by the roller. Therefore, it has a sizable volume, and thus a large-sized structure is installed at a wall of a building. Moreover, in order to minimize exposure of the main body with consideration for the external appearance, the structure of a wall of a building has to be changed.
Further, various signboards for advertising purposes are installed at an outer wall of a building. In case that an awning screen is provided, there is a problem in that the signboards are covered with the awning screen. Accordingly, the awning screen, signboard and shutter have to be provided separately.
Moreover, the awning screen is mainly used in the daytime, but the shutter is mostly used at nighttime after business hours. Therefore, the awning screen and shutter are respectively used at different times. That is, while the awning screen performs its own function, the shutter is in the state of being opened, and while shutter is in the state of being closed, the shutter loses its own function. Therefore, there is no redundancy effect due to a double installation of the awning screen and shutter.

SUMMARY OF THE INVENTION

An embodiment of the present invention is directed to providing a multi-purpose shading device with a multi-stage collapsible blind part, in which the blind part is rotatably configured so as to function as a shutter and an advertising board when it is rotated downwardly and to function as a signboard when it is rotated upwardly.
To achieve the object of the present invention, the present invention provides a multi-purpose shading device including a blind part which is provide with a plurality of blind plates and formed into a multi-stage type so that a rear side blind plate is guided to a fore-end side blind plate so as to be extended or collapsed along the fore-end side blind part; a driving part which extends or collapse the blind part; a rotational part which rotates the blind part; and a control part which controls the driving part and rotational part.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view showing the configuration of a multi-purpose shading device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the multi-purpose shading device according to the embodiment of the present invention.

FIG. 3 is a front view of the multi-purpose shading device according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view of a multi-purpose shading device according to another embodiment of the present invention.

FIG. 5 is a front view of a multi-purpose shading device according to yet another embodiment of the present invention.

FIG. 6 is a view showing the operation of the multi-purpose shading device according to the embodiment of the present invention.

FIG. 7 is a perspective view in the case that the multi-purpose shading device of the present invention is used as a signboard.

FIGS. 8 a and 8 b are a side view and a cross-sectional view of a blind part and a driving part according to one embodiment of the present invention.

FIG. 9 is a side view showing the operation in FIG. 3.


[Detailed Description of Main Elements]

	100: blind part	110, 150: first blind plate
	111, 151: 1-1^st surface	112, 152: 1-2^nd surface
	120, 160: second blind plate	122, 162: 2-2^nd surface
	130, 170: third blind plate	132, 172: 3-2^ndsurface
	155: first roller	165: second roller
	166: third roller	175: fourth roller
	181: runner	182: rail
	200: driving part	210: driving motor
	211, 321: driving gear	212, 322: driven gear
	220: rack	221: pinion
	230, 240: collapsible supporter	231, 241: wire
	232, 242: winding case	250: extending motor
	251: extending wire	251′: wire groove
	260: collapsing motor	260′: tension reel
	261: collapsing wire	300: rotational part
	301: shaft	310: housing
	320: rotational motor	330: bearing
	400: signboard	500: control part

DESCRIPTION OF SPECIFIC EMBODIMENTS

The advantages, features and aspects of the invention will become apparent from the following description of the embodiments with reference to the accompanying drawings, which is set forth hereinafter.
The present invention is provided with a multi-stage collapsible blind part. The blind part is rotatably configured so as to function as a shutter and an advertising board when it is rotated downwardly and to function as a signboard when it is rotated upwardly.
A multi-purpose shading device of the present invention includes a collapsible blind part 100, a driving part 200 which collapses or extends the blind part 100, and a rotational part 300 which upwardly or downwardly rotates the blind part 100 at a certain angle. The multi-purpose shading device further includes a control part 500 which controls the driving part 200/rotational part 300 and a signboard 400 installed at the blind part 100.
FIG. 1 is a view showing the configuration of a multi-purpose shading device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the multi-purpose shading device according to the embodiment of the present invention.
The blind part 100 is comprised of a plurality of blind plates. A rear side blind plate is guided by a fore-end blind plate, and thus the rear side blind plate can be collapsed or extended along the front side blind plate. Therefore, the blind plates are formed into a multi-stage type. Herein, the plurality of blind plates are configured to be collapsed and extended in a telescopic type. In the telescopic blind part 100, the rear side blind plates are slid with the fore-end blind plate so as to be collapsed or extended. That is, the rear side blind plates are provided so as to be slid with the fore-end blind plate, thereby being collapsed or extended. The blind plates may be formed into a two or more stage type. In case of a 3-stage type according to the embodiment shown in the drawings, a second blind plate 120 is disposed in a first blind plate 110 so as to be collapsible and extendable, and a third blind 130 is also disposed in the second blind plate 120 so as to be collapsible and extendable. The number of blind plates may be increased or reduced according to a surface area to be shielded.
In other words, according to the configuration of the 3-stage telescopic blind part 100, the second blind plate 120 is configured to be guided into the first blind plate 110 and thus to be collapsed and extended, and the third blind plate 130 is also configured to be guided into the second blind plate 120 and thus to be collapsed and extended.
That is, the second blind plate 120 is installed so as to be guided into the first blind plate 110 and to be inserted into or withdrawn from the first blind plate 110, and the third blind plate 130 is installed so as to be guided into the second blind plate 120 and to be inserted into or withdrawn from the second blind plate 120. Herein, the second and third blind plates 120 and 130 which are respectively inserted into and withdrawn from the first and second blind plates 110 and 120 are configured to be not separated from the first and second blind plates 110 and 120. As shown in FIG. 3, the second and third blind plates 120 and 130 may be formed with a flange portion and protruded portion in order to prevent the separation.
In the blind part 100, as described above, a shielding surface area of the blind part 100 can be regulated by the inserting and withdrawing of the plurality of the blind plates. The blind plates may be formed of a light metal, a light PE resin or the like.
Further, the blind part 100 may be configured to be controlled manually. However, in the present invention, the blind part 100 may be also configured to be controlled automatically as shown in FIG. 2.
The driving part 200 functions to automatically insert or withdraw the multi-stage blind plates, thereby collapsing or extending the blind part 100.
Herein, the driving part 200 may be implemented in the form of various embodiments. In one of the embodiments, as shown in FIG. 2, the driving part 200 includes a rack 220 which is disposed at one side of the blind part 100 so that one end of the rack 220 is coupled to the third blind plate 130, a pinion 221 which linearly drive the rack 220, and a driving motor 210 which rotates the pinion 221. Herein, the driving motor 210 can be rotated normally and reversely. If the pinion 221 is rotated by normal or reverse rotation of the driving motor 210, the rack 220 is linearly moved by the rotation of the pinion 221. Thus, the third blind plate 130 coupled to the rack 220 is also moved together with the rack 220, and the second and third blind plates 120 and 130 are respectively guided to the first and second blind plates 110 and 120 so as to be collapsed and extended.
The first, second and third blind plates 110, 120 and 130 of the present invention has a desired thickness in order to function as a shutter and a signboard to be described later. And each internal portion of the first and second blind plates 110 and 120 is hollowed so that the second third plates 120 and 130 are respectively slid therein.
The operation of the driving part 200 including the pinion 221 and the rack 220 is carried out by the linear movement of the rack 220. Herein, it is necessary to secure a space in which the rack 220 can be moved back.
FIG. 4 is an exploded perspective view of a multi-purpose shading device according to another embodiment of the present invention.
In the embodiment, a collapsible supporter 230 may be provided instead of the rack 220 and pinion 221. This configuration is to reduce limitation on installation of the multi-purpose shading device.
The collapsible supporter 230 of the embodiment is disposed at one side of the blind part 100 so that one end of the collapsible supporter 230 is coupled to the third blind plate 130. The collapsible supporter 230 is formed into a multi-stage type so as to be collapsed and extended. A wire 231 is provided in the collapsible supporter 230. One end of the wire 231 is fixed to a fore-end portion of the collapsible supporter 230, and the other end thereof is wound in a winding case 232.
The winding case 232 includes a drum (not shown) on which the wire 231 is wound. The drum is normally or reversely rotated by the driving motor 210 so that the wire 231 is wound or released. That is, if the drum of the winding case 232 is rotated by rotation of the driving motor 210, a length of the wire 231 is varied, and thus a length of the collapsible supporter 230 is also changed. Therefore, the third blind plate 130 is inserted into the second blind plate 120, thereby changing the range of shielding the sun or shutting out the rain. Herein, in order to guide the wire 231, the collapsible supporter 230 has the similar configuration to a telescopic antenna. In this configuration, the driving motor 210 can be also rotated normally and reversely. The winding case 232 is driven by the driving motor 210 so that the wire 231 is wound or released.
Further, the driving part 200 including the driving motor 210, the winding case 232, the wire 231 and the collapsible supporter 230 can be disposed at only one side of the blind part 100. However, in such configuration, while the blind part 100 is collapsed, the collapsing operation may be disturbed by a balance difference between left and right sides of each blind plate. In order to solve the problem, one pair of the driving parts 200 may be provided at both sides of the blind part 100. Further, the driving part 200 may be also disposed at the front and rear sides of the blind part 100 as well as the side thereof.
However, the driving part 200 comprised of the driving motor 210, the winding case 232, the wire 231 and the collapsible supporter 230 is operated in the state that it is exposed to an outside of the blind part 100. Therefore, external impact may be directly applied to the driving part 200. That is, the driving part 200 may be decolorized or corroded by the influence of the sun, the rain or the like. In addition, it is feared that a safety accident will occur while the driving part 200 is operated.
Hereinafter, the configuration of the driving part 200 for solving the above-mentioned problems will be described.
FIG. 5 is a front view of a multi-purpose shading device according to yet another embodiment of the present invention. The driving part 200 of the embodiment is provided with a collapsible supporter that a wire is disposed therein, thereby increasing its durability and stability.
In the configuration, the collapsible supporter 240 is formed into a multi-stage type so as to be collapsed and extended, and disposed in the blind plates 110, 120 and 130. One end of the collapsible supporter 240 is coupled to the third blind plate 130, and the other end thereof is coupled to a winding case 242. Further, a wire 241 is provided in the collapsible supporter 240. One end of the wire 241 is fixed to a fore-end portion of the collapsible supporter 240, and the other end thereof is wound in the winding case 242. Furthermore, the winding case 242 includes a drum (not shown) on which the wire 241 is wound. The wire 241 is wound or released by rotation of the drum. Herein, the drum of the winding case 242 is normally or reversely rotated by a driving motor 210. Rotational force of the driving motor 210 is directly applied to the winding case 242 so as to rotate the drum of the winding case 242. However, a driving gear 211 and a driven gear 212 may be provided between the winding case 242 and the driving motor 210 so that the rotational torque of the driving motor 210 is increased and then transmitted to the winding case 242.
Further, the above-mentioned configuration is provided in plural so as to be disposed in left and right sides of the blind part 100. Therefore, it can be prevented that the collapsing operation is disturbed by the balance difference between left and right sides of each blind plate. In this case, the driving motor 210 may be also provided in plural corresponding to the number of winding cases 242. However, if each driving part 200 is operated by the multiple driving motors 210, rotational deviation may be occurred by fabrication tolerance of each driving motor 210, and thus the collapsing operation of the blind part 100 may be disturbed by the balance difference between left and right sides of each blind plate due to the rotational deviation of each driving motor 210. Therefore, it is preferable that the plurality winding cases 242 are operated by a single driving motor 210. To this end, the rotational force of the signal driving motor 210 may be transmitted to the winding cases 242 through a winding shaft 243. Herein, the winding shaft 243 may be replaced by a belt or other power transmission means.
Herein, the configuration of the driving part 200 operated by the single driving motor 210 will be described. The rotational force of the signal driving motor 210 is transmitted to the plurality of the winding cases 242 through the winding shaft 243. The winding cases 242 are installed on the winding shaft 243. The collapsible supporter in which the wire 241 is installed is coupled to each winding case 242. That is, the winding cases 242 are driven by the single driving motor 210. Therefore, it can be minimized that the collapsing operation is disturbed by the balance difference between left and right sides of each blind plate. Herein, a driving gear 211 is installed on a rotational shaft of the driving motor 210, and a driven gear 212 is installed on the winding shaft 243. The rotational force of the driving motor 210 transmitted to the winding case 242 can be controlled by a gear ratio of the driving gear 211 and the driven gear 212. And the driving motor 210 is controlled by the control part 500.
By such configuration, the blind part 100 can be smoothly collapsed or extended by controlling the normal and reverse rotation of the driving motor 210, thereby controlling the range of shielding the sun or shutting out the rain.
Next, the configuration for rotating the blind part 100 at a desired angle will be described.
In the present invention, the blind part 100 is configured to be rotatable. To this end, it is necessary for a shaft for rotating the first blind part 110. This shaft functions to rotate the whole blind parts, i.e., the blind part 100 by rotating the first blind part 110. This operation can be achieved by a shaft 301 which is disposed at a rear side of the first blind part 110. In other words, the rotational part 300 rotates the blind part 110 at a desired angle. This can be achieved by rotating the shaft 301 coupled with the first blind part 110.
The rotational part 300 includes a housing 310 to which the shaft 301 is rotatably coupled, and a rotational motor 320 which rotates the shaft 301. Therefore, the rotational force of the rotational motor 320 can be transmitted to the shaft 301. In case of the configuration that the rotational force of the rotational motor 320 is directly transmitted to the shaft 301, the rotational motor 320 may be overloaded. Therefore, a driving gear 321 is installed on a rotational shaft of the driving motor 320, and a driven gear 322 is installed on the shaft 301. The driving gear 321 is engaged with the driven gear 322 so that the rotational force of the rotational motor 320 can be transmitted to the shaft 301. A bearing 330 may be interposed between the shaft 301 and the housing 310 in order to smoothly rotate the shaft 301. Further, the driving shaft 321 and driven shaft 322 may be replaced with a driving pulley and a driven pulley, and the driving pulley and driven pulley may be connected through a belt.
In case that the multi-purpose shading device of the present invention is disposed at an outer wall of a building, the blind part 100 rotated by the rotational motor 310 may be configured to be rotated upwardly within a range of an angle of 90° and also rotated downwardly within a range of an angle of 90°.
FIG. 6 is a view showing the operation of the multi-purpose shading device according to the embodiment of the present invention. The signboard 400 can be provided on a 1-1^st surface 111 of the first blind plate which is exposed to the outside by upward rotation of the blind part 100.
Further, an advertising board can be provided on at least one of a 1-2^nd surface 112, 2-2^nd surface 122 and 3-2^nd surface 132 which is exposed to the outside by downward rotation of the blind part 100.
More detailedly, as shown in FIG. 6, in order for the multi-purpose shading device of the present invention to function as a shutter, the blind part 100 is rotated downwardly, and the first, second and third blind plates 110, 120 and 130 of the blind part 100 are extended. In other words, when the rotational motor 310 is driven so that the blind part 100 is parallel with an outer wall of a building, and then the first, second and third blind plates 110, 120 and 130 of the blind part 100 are extended, the blind part 100 can functions as the shutter for protecting a show window, a wall, a door or the like.
Herein, the advertising board can be provided at the 1-2^nd surface 112, 2-2^nd surface 122 and 3-2^nd surface 132 which are exposed to the outside. Therefore, it is possible to promote stores and goods to customers. The advertising board formed at each surface may be a paper sheet which can be facilely attached and detached.
Further, in order for the multi-purpose shading device of the present invention to function as the signboard, the blind part 100 is rotated downwardly so that the blind part 100 is parallel with an outer wall of a building, and the 1-1^st surface 111 is exposed to the outside. The signboard is provided at the exposed surface. The signboard 400 may be formed by directly marking a shop name. Otherwise, the signboard 400 may be configured to emit light when power is applied.
Meanwhile, the control part 500 functions to control the driving part 200 and the rotational part 300. The control part 500 may include a button for normally and reversely rotating the driving motor 500, a button for normally and reversely rotating the rotational motor 500, or the like. Further, a locking unit for preventing an operation of a third party may be provided.
FIGS. 8 a and 8 b are a side view and a cross-sectional view of the blind part and the driving part according to one embodiment of the present invention, and FIG. 9 is a side view showing the operation thereof.
Hereinafter, a direction that blind part is extended is called as a “front side”, and a direction that blind part is collapsed is called as a “rear side”. In the blind part 100, a rear side blind part can be inserted in a fore-end blind plate and also slid from the fore-end blind plate. This configuration may be formed into a two or more stage type. In case of a 3-stage type, the blind part 100 includes a first blind plate 150, a second blind plate 160 and a third blind plate 170.
The first blind part 150 is provided with a first roller 155 which is disposed at an inner front side thereof. The second blind part 160 is slidably disposed on the first blind plate 150. The second blind part 160 is provided with a second roller 165 which is disposed at an inner front side thereof and a third roller 166 which is disposed at an inner rear side thereof. The third blind part 170 is slidably disposed on the second blind plate 160. The third blind part 170 is provided with a fourth roller 175 which is disposed at an inner rear side thereof. The signboard 400 is provided on a 1-1^st surface 151 of the first blind plate 150.
As described above, the driving part 200 can be driven by two wires and a motor on which each wire is wound. An extending wire 251 is to extend the blind part 100, and a collapsing wire 261 is to collapse the blind part 100.
The extending wire 251 is fixed to an inner front end of the third blind plate 170, wound on the fourth roller 175 and then guided to the outside. Then, the extending wire 251 is wound again on the second roller 165 of the second blind plate 160, led into the second blind plate 160, wound on the third roller 166 and then guided to the outside. And the extending wire 251 is wound again on the first roller 155 of the first blind plate 150, led to the first blind plate 150, guided to a rear side and the led to the rear side of the first blind plate 150. Then, the extending wire 251 is wound on an extending motor 250.
Further, one end of the collapsing wire 261 is connected to the rear side of the third blind plate 170, and the other end thereof is wound on a collapsing motor 260.
Herein, the extending motor 250 and collapsing motor 260 are controlled by the control part 500.
In the above-mentioned configuration, the extending wire 251 is led from the lower portion of the third blind plate 170 to the front side of the second blind plate 160, guided to the rear side of the second blind plate 160, and then guided again to the front side of the first blind plate 150. Therefore, the extending wire 251 is surface-contacted with each of the first, second and third blind plates 150, 160 and 170. Therefore, a wire groove 251′ through which the extending wire 251 led to the outside is guided is formed in an upper surface of the second blind plate 160.
In addition, in order for the blind plates 150, 160, 170 to be slidably surface-contacted with each other, the second and third blind plates 160 and 170 are respectively formed with a runner 181 protruded to the lower side thereof. And the first and second blind plates 150 and 160 are respectively formed with a rail 182 for guiding movement of the runner 181.
Hereinafter, the operation thereof will be described.
Firstly, in the state that the blind plates 150, 160 and 170 are collapsed, the extending motor 250 is driven by the control part 500. While a length of the extending wire 251 wound on the extending motor 250 is reduced, the extending wire 251 is slid to the front sides of the second and third blind plates 160 and 170. Thus, the first, the second and third blind plates 150, 160 and 170 are extended to perform the shading function.
And the first blind plate 150 is coupled to the shaft 301, and the shaft 301 is rotated by the shaft 301. That is, the shaft 301 is configured to be rotated upwardly and downwardly by the rotational motor 320 of the rotational part 300. Therefore, the blind part 100 can be rotated downwardly by a control signal of the control part. If the blind part 100 is extended while the blind part 100 is rotated downwardly, the blind part 100 functions as the shutter. And if the blind part 100 is extended while the blind part 100 is rotated upwardly, the blind part 100 functions as the signboard.
Herein, the rotational part 300 also includes a shaft 301 which is coupled to one side of the first blind part 150, a housing 310 to which the shaft 301 is rotatably coupled, and a rotational motor 320 which normally and reversely rotates the shaft 301 and housing 310. In case that the rotational force of the rotational motor 320 is directly transmitted to the shaft 301, the rotational motor 320 may be overloaded. Therefore, as shown in FIG. 4, a driving gear 321 is installed on a rotational shaft of the driving motor 320, and a driven gear 322 is installed on the shaft 301. The driving gear 321 and driven gear 322 are engaged with each other. Therefore, the rotational torque of the driving motor 320 is increased and then transmitted to the shaft 301. Herein, a bearing 330 may be interposed between the shaft 301 and the housing 310 in order to smoothly rotate the shaft 301. Further, the driving shaft 321 and driven shaft 322 may be replaced with a driving pulley and a driven pulley, and the driving pulley and driven pulley may be connected through a belt.
Herein, an advertising board can be provided on at least one of a 1-2^ndsurface 152, 2-2^ndsurface 162 and 3-2^ndsurface 172 which is exposed to the outside by downward rotation of the blind part 100. The advertising board formed at each surface may be a paper sheet which can be facilely attached and detached.
While the second and third blind plates 160 and 170 are extended by the operation of the extending motor 250, the collapsing motor 260 can be rotated freely.
When the blind plates 150, 160 and 170 are collapsed, the extending motor 250 is controlled to be rotated freely, and the collapsing motor 260 is operated by the control part 500. That is, if the collapsing wire 261 is controlled to be wound on the collapsing motor 260, the extended second and third blind plates 160 and 170 are slid to the rear side and thus collapsed. The extending motor 260 is controlled to be rotated freely so that the extending wire 251 is released.
As described above, when one of the extending motor 250 and collapsing motor 260 is operated, the other one is controlled to be rotated freely. The collapsing motor 260 may be replaced with a tension reel 260′ driven by the extending motor 250. In the tension reel 260′, tension is increased, as the wound collapsing wire 261 is released, and if force applied to the released collapsing wire 261 is removed, the collapsing wire 261 is wound again.
In such configuration, there is an advantage in that a width of each blind plate 150, 160, 170 can be set to be the same as each other.
According to the present invention, the blind part can be generally used as an awning screen by extending the blind plates formed into the multi-stage type. The blind part can be used as a shutter when it is rotated downwardly, and also used as a signboard when it is rotated upwardly. If necessary, the blind plates may be collapsed. In other words, the shading device of the present invention has multiple purposes, thereby providing an economical advantage and also simplifying its configuration.
Further, the blind part can function as an advertising board by providing various advertisements on the outer surface thereof, while it is used as the shutter.
While the present invention has been described with respect to the specific embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

What is claimed is:

1. A multi-purpose shading device comprising:

a blind part 100 which is provide with a plurality of blind plates and formed into a multi-stage type so that a rear side blind plate is guided to a fore-end side blind plate so as to be extended or collapsed along the fore-end side blind part;

a driving part 200 which extends or collapse the blind part 100;

a rotational part 300 which rotates the blind part 100: and

a control part 500 which controls the driving part 200 and rotational part 300.

2. The multi-purpose shading device of claim 1, wherein the blind part 100 comprises

a first blind plate 110;

a second blind plate 120 which is guided to the first blind plate 110 so as to be inserted into or withdrawn from the first blind plate 110; and

a third blind plate 130 which is guided to the second blind plate 120 so as to be inserted into or withdrawn from the second blind plate 120

3. The multi-purpose shading device of claim 1, wherein the blind part 100 comprises

a first blind plate 150 which is provided with a first roller 155 disposed at an inner front side thereof;

a second blind plate 160 which is slidably disposed on the first blind plate 150 and provided with a second roller 165 disposed at an inner front side thereof and a third roller 166 disposed at an inner rear side thereof; and

a third blind plate 170 which is slidably disposed on the second blind plate 160 and provided with a second roller 165 disposed at an inner rear side thereof.

4. The multi-purpose shading device of claim 2, wherein a signboard 400 is installed on a 1-1^stsurface 111, 151 of the first blind plate 110, 150 which is exposed to an outside when the blind part 100 is moved upwardly.

5. The multi-purpose shading device of claim 2, wherein an advertising board is provided on at least one of a a 1-2^ndsurface 112, 152 of the first blind plate 110, 150 which is exposed to an outside when the blind part 100 is moved downwardly, a 2-2^ndsurface 122, 162 of the second blind plate 120, 160 which is exposed to an outside when the blind part 100 is moved downwardly, and a 3-2^ndsurface 132, 172 of the third blind plate 130, 170 which is exposed to an outside when the blind part 100 is moved downwardly.

6. The multi-purpose shading device of claim 2, wherein the driving part 200 comprises

a rack 220 which is disposed at one side of the blind part 100 and of which one end is connected to the third blind plate 130;

a pinion 221 which is engaged with the rack 220; and

a driving motor 210 which normally or reversely rotates the pinion 221.

7. The multi-purpose shading device of claim 2, wherein the driving part 200 comprises

a collapsible supporter 230 which is disposed at one side of the blind part 100 and of which one end is connected with the third blind plate 130 so as to be extended or collapsed in a multi-stage type;

a wire 231 which is disposed in the collapsible supporter 230 and of which one end is fixed to a fore-end side supporter of the collapsible supporter 230 and the other end is wound in a winding case 232; and

a driving motor 210 which is normally or reversely rotated so as to drive the winding case 232 and thus to release or wind the wire 231.

8. The multi-purpose shading device of claim 2, wherein the driving part 200 comprises

a collapsible supporter 240 which is disposed in the blind part 100 and of which one end is connected with the third blind plate 130 so as to be extended or collapsed in a multi-stage type;

a wire 241 which is disposed in the collapsible supporter 240 and of which one end is fixed to a fore-end side supporter of the collapsible supporter 240 and the other end is wound in a winding case 242; and

a driving motor 210 which is normally or reversely rotated so as to drive the winding case 242 and thus to release or wind the wire 241.

9. The multi-purpose shading device of claim 8, wherein rotational force of the driving motor 210 is transmitted to the winding case 242 through a winding shaft 243, and multiple winding cases 242 are installed on the winding shaft 243, and each winding case 242 is provided the collapsible supporter 240 in which the wire 241 is disposed.

10. The multi-purpose shading device of claim 2, wherein the rotational part 300 comprises

a shaft 301 which is coupled to one side of the first blind plate 110, 150;

a housing 310 to which the shaft 301 is rotatably coupled; and

a rotational motor 320 which normally or reversely rotates the shaft 301.