KR101369269B1 - Revolving Type Bulletin Apparatus Providing Information - Google Patents

Abstract

Rotating information board is provided. Rotating information provided provided is configured to allow the rotating plate installed between the lower cover body and the upper cover body to rotate by the power transmission unit, the upper surface of the upper cover body is provided with a solar power generation unit, the solar power generation The unit is installed inclined on the upper surface of the light collecting panel of the photovoltaic generator, the lower surface is the mounting frame bearing coupled to the upper cover body, the first internal gear installed on the lower inner surface of the mounting frame, the predetermined portion of the upper cover body The second internal gear meshed with the first internal gear in the state coupled axially coupled to the structure comprises a power transmission shaft installed on the top, the power transmission portion is coupled to the lower cover body and the upper cover body. A main shaft, a drive motor installed on the lower cover body to transmit rotational force to the main shaft, and coupled to an upper end of the main shaft, with a guide protrusion and an actuating stone on one surface thereof. A first power transmission gear having a gear is coupled to the lower end of the power transmission shaft, and is provided between the plurality of rotating protrusions and the rotating protrusions guided by the guide protrusions of the first power transmission gear to be caught by the operation protrusions. The second power transmission gear is configured to include an operating groove intermittently rotating at a predetermined angle.

Description

Revolving Type Bulletin Apparatus Providing Information}

The present invention relates to an information bulletin board, and more particularly, by collecting a rotation efficiency of the information panel is installed and at the same time by rotating the photovoltaic unit is installed a photovoltaic unit to adjust the angle of the light collecting panel (sunlight incident angle) It relates to a rotating information board that can improve.

As is well known, ADVERTISEMENT APPARATUS is used to display goods to be sold and to make them stand out so that people can easily see them.There are various types of roof boards, wall signs, headboards, and signboards. It is formed of materials and is classified structurally as neon sign, advertising tower, lighting advertising sign, painting sign, plastic sign, and rotating information board.

In the conventional rotatable information bulletin board as shown in FIG. 1A, a base plate 100 fixed on the fixing structure 200 is installed, and the base plate 100 rotates the support shaft 110 to be described later. A shaft support housing 120 for supporting at the same time is provided. A bearing 130 is installed inside the shaft support housing 120 to guide rotation of the support shaft 110, and an inner wall of the shaft support housing 120 rotates the support shaft 110. The motor 140, which is a driving means for the fixed part, is fixedly installed by the support bracket 140a.

On the other hand, a driving pulley 150a is provided on the drive shaft of the motor 140, and a driven pulley 150b is provided on the support shaft 110 at a position opposite thereto, and the belt 160 is disposed between the pulleys 150a and 150b. Is rolled up so that a power transmission relation to the support shaft 110 is achieved.

In addition, a frame 170 for installing and supporting a circular billboard is provided on the support shaft 110, and between the frame 170 and the support shaft 110, a plurality of fluorescent lights, which are backlight devices for lighting at night ( 180 is supported. In other words, the support shaft 110 that is rotationally supported by the shaft support housing 120 in the conventional rotary information board is a rotating body, the fluorescent lamp 180, which is a backlight device fixed to the support shaft 110 is also the shaft It has a configuration that works with.

However, the conventional rotating information board having the configuration as described above has the following problems. In the electric wiring for lighting the fluorescent lamp 180, the electric wire cannot be twisted and installed because the fluorescent lamp is interlocked with the support shaft 110. Due to this problem, a conductor such as copper plate 190a is installed after the insulation on the support shaft 110, which is a rotating body, and the non-rotating fixture (for example, a shaft support housing, etc.) opposite to the copper plate 190a is always used. Since the structure constituting the brush 190b in contact is inevitable, the frictional wear of the brush 190b is intensified, so that the brush does not come in contact properly. In addition, since the backlight device of the fluorescent lamp is interlocked with the support shaft 110, the stability is stable. In addition, since the support shaft 110 is a rotating body by the bearing 130, if the height of the support shaft is to be increased, the diameter of the shaft must also be large and the size or number of the bearings must be changed. There is a problem that causes enormous obstacles to the robustness of the structure.

On the other hand, in order to solve the above problems, the support shaft is fixed and only the billboard has been proposed to rotate, it is installed to be fixed to a fixed body having a certain height (for example support post 20), as shown in Figure 1b, The back support bracket 18a is provided with the large support shaft 11 of constant diameter to which the fluorescent lamp 18 which is a backlight device is fixedly installed. In addition, the upper portion of the support shaft 11 is provided with a center gear 12 is axially coupled to the rotation material by the bearing (12a) is installed. In addition, a motor 13 fixed to the support shaft 11 at the lower end of the center gear 12 by the motor bracket 13a is installed. Specifically, the motor 13 is a geared motor equipped with a reduction gear. Meanwhile, the pinion 14 meshed with the center gear 12 is press-fitted to the drive shaft of the motor 13 to fix it. In addition, the upper portion is fixed to the center gear 12 side, the lower portion includes a support frame means 15 that is rotatably coupled to the support shaft 11 and forms a skeleton for supporting the circular billboard 19. It is configured by.

The lower coupling structure of the support shaft 11 described above is fixed bearing housing 16a fixed to the support shaft 11 and fixed to the support frame means 15, as shown in FIG. The rotating bearing housing 16b to be installed is interposed between the bearing housings 16a and 16b and is coupled by a ball bearing 16c for guiding rotation of the support frame means 15.

In addition, a specific embodiment of the support frame means 15, the upper horizontal frame 15a which is fixed to a plurality of radially fixed to the center gear 12, and the upper portion installed on each edge of the upper horizontal frame 15a A circular frame 15b, a lower horizontal frame 15c radially fixed to the rotary bearing housing 17, a lower circular frame 15d installed at each edge of the lower horizontal frame 15c, and the It has a configuration including a vertical frame 15e fixedly installed between the upper circular frame 15b and the lower circular frame 15d.

In the device configured as described above, when power is applied to the motor 13 and the pinion 14 is driven in one direction, the support shaft 11 which is a fixed body to guide the rotation state of the central gear 12 engaged with the pinion 14 is guided. The upper horizontal frame (15a), the fixed bearing housing (16a), the rotating bearing housing on the upper side is rotated by a bearing (12a) is rotated on the upper side and at the same time radially fixed to the center gear (12) A lower horizontal frame 15c on the lower side which guides rotation by the 16b and the ball bearing 16c, and a vertical frame 15e connected and supported between the upper horizontal frame 15a and the lower horizontal frame 15c, and the like. The support frame means of 15 is to be rotated.

However, the rotating information board shown in Figure 1b is durable because the support shaft is fixed and only the billboard is rotated, there is an advantage that can be used in combination with a large support shaft, but there is a problem in sealing at the top of the support shaft due to oxidation of the support shaft Due to the degradation of durability and the penetration of rainwater through the support shaft there is a problem such as a risk of leakage.

On the other hand, the Republic of Korea Utility Model Registration No. 383703 has proposed a 'advertising device using solar energy and wind energy' to supply the power required for the lighting means of the billboard through the power generation by the solar cell module or wind power generator.

However, the Republic of Korea Registered Utility Model No. 383703 has a problem in that the space utilization efficiency is lowered because the power supply is supplied in a state in which the solar cell module or the wind power generator is installed separately from the advertisement board.

Accordingly, the present invention was made to solve the general problems of the conventional information board, the rotation type,

The problem to be solved by the present invention is to provide a rotating information board that can be expected to improve the operating efficiency according to the simplification of the power transmission structure.

Another problem to be solved by the present invention is to provide a rotatable information board that can be installed integrally with the solar generator to improve the space utilization efficiency.

Another problem to be solved by the present invention is to improve the condensing efficiency by rotating the rotating plate to which the information posting is attached and at the same time by rotating the photovoltaic unit in which the photovoltaic generator is installed to adjust the angle of the light collecting panel (solar incident angle). To provide a rotatable information bulletin that can be.

As a specific means of the present invention for achieving the above object;

In the rotary information bulletin board configured to rotate between the lower cover body and the upper cover body by the power transmission unit,

The upper surface of the upper cover body is provided with a photovoltaic power generation unit, the photovoltaic power generation unit is installed inclined to the upper surface of the light collecting panel of the photovoltaic generator and the lower surface is an installation frame bearing coupled to the upper cover body, this installation A first transmission gear installed at a lower inner surface of the frame and a second transmission gear meshed with the first internal gear in a state in which the first internal gear is axially coupled to the vertically penetrating portion of the upper cover body; Is composed by

The power transmission unit is axially coupled to the lower cover body and the upper cover body, a drive motor installed on the lower cover body to transfer the rotational force to the main shaft, axially coupled to the upper end of the main shaft and acts as a guide projection on one surface A first power transmission gear provided with a projection, the shaft coupled to the lower end of the power transmission shaft and provided between the plurality of rotating projections and the rotating projections guided to the guide projection of the first power transmission gear to the operating projections And a second power transmission gear configured to include an operating groove intermittently rotating at a predetermined angle.

In a preferred embodiment, the rotating plate is formed in a cylindrical shape so that the upper end and the lower end can be fitted into the rotating groove corresponding to the lower cover body and the upper cover body, and is axially coupled to the main shaft on the inner surface of the rotating plate. The connecting rods of the rotating first and second rotating media may be fixed.

In a preferred embodiment, the upper cover or lower cover body may be provided with a lamp that emits light by the power supplied from the solar generator.

As described above, the rotatable information board according to the present invention is provided with a photovoltaic generator integrally, and simplifies the power transmission structure by transmitting power through the first and second power transmission gears and the first and second internal gears. Therefore, there is an effect that can improve the space utilization efficiency with the effect to improve the operating efficiency.

In addition, the rotating information bulletin board of the present invention rotates the rotating plate to which the information post is attached and at the same time rotates the installation frame of the photovoltaic unit in which the photovoltaic generator is installed, the light collecting panel of the solar generator tracks the sunlight Since it can condense, there is an advantage to improve the condensing efficiency.

1A is a cross-sectional view for explaining an example of a conventional rotating information board.
1B is a cross-sectional view for explaining another example of the conventional rotating information bulletin board.
Figure 2 is an exploded perspective view for explaining the rotation information board according to the present invention.
3 is a perspective view for explaining a rotatable information board according to the present invention.
Figure 4a is a side cross-sectional view for explaining the rotating information bulletin according to the invention.
Figure 4b is a side cross-sectional view for explaining another installation example of the main shaft in the rotating information board according to the present invention.
5 is a cross-sectional view for explaining a state in which the lamp is installed on the upper, lower cover body in the rotating information bulletin board according to the present invention.
6 is a planar configuration diagram for explaining a first power transmission gear and a second power transmission gear in the rotating information bulletin board according to the present invention.
Figure 7 is an enlarged perspective view of the excerpts for explaining the connection state of the main shaft and the photovoltaic unit in the rotating information bulletin according to the present invention.
8 is a block diagram illustrating photovoltaic power generation using a photovoltaic generator in the rotating information bulletin board according to the present invention.
9 is a perspective view for explaining the operating state of the rotation information board according to the present invention.
10 is a cross-sectional view for explaining the operation of the rotating information board according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 to 4a, the rotating information bulletin board 1 of the present invention includes an upper and lower cover bodies 3 and 2, a rotating plate 4, and a power transmission unit 5, and solar light. It further comprises a power generation unit (6).

The lower cover body 2 is fixed to the ground. To this end, various fixing methods may be applied. Preferably, the lower cover body may be firmly fixed to the base plate constructed by curing concrete as anchor bolts, as in the construction method of a conventional street lamp, and the base plate will be described later. It is preferable to wire an external power lead wire (not shown) to supply power to the driving motor. At this time, the lower cover body (2) is composed of a cylindrical body that is open at the top, as the constituent material can be applied synthetic resin material or metal (preferably to give color), such a lower cover body (2) At the edge of the opening part, the rotary groove 21 is provided with the rotary plate 4 to be described later.

The upper cover body 3 has a cylindrical shape in which a lower portion thereof is opened, as opposed to the lower cover body 2, and a synthetic resin material or a metal (preferably color) is applied as the constituent material. The opening edge of the upper cover body 3 is provided with a rotation groove 31 corresponding to the rotation groove 21 of the lower cover body 2.

Here, the upper and lower cover bodies 3 and 2 may be provided with lamps 32 and 22 that emit light by the power supplied from the photovoltaic unit 6. Such lamps 32 and 22 may be preferably applied to the light emitting diodes (LEDs) as shown in FIG. 5, wherein grooves are provided in the upper and lower cover bodies 3 and 2 to insert the light emitting diodes (LEDs). By installing and then wiring the lamps 32 and 22, the night visibility of the rotating plate can be improved by the light emission of the lamps 32 and 22 at night.

The rotating plate 4 is formed in a cylindrical shape, and the upper and lower ends are fitted into the rotary grooves 21 and 31 corresponding to the lower cover body 2 and the upper cover body 3. To this end, the rotating plate 4 is composed of a synthetic resin panel made of an opaque or semi-transparent body having a color, the outer surface to which the information posts are attached to various projections so as not to illegally attach the information posts to the site other than the information posts Or it is preferable to provide a groove. At this time, the rotating plate 4 is connected to the main shaft 51 by the first and second rotation media (42, 43) in order to receive the rotational force from the main shaft 51 of the power transmission unit 5 to be described later, As in 4a, the first and second rotation media 42 and 43 are axially coupled to the upper and lower portions of the main shaft 51, respectively, and have connecting rods 421 and 431 radially protruding from the inner surface of the rotating plate 4. It is fixed to the top and bottom, respectively, and has a structure for transmitting the rotational force of the main shaft 51 to the rotating plate (4).

The power transmission unit 5 includes a main shaft 51, a drive motor 52, and first and second power transmission gears 53 and 54.

The main shaft 51 is axially coupled to the center of the lower cover body 2 and the upper cover body 3 as shown in FIGS. 4A and 7. To this end, coupling holes 23 and 33 to which the main shaft 51 is bearing are protruded from the lower cover body 2 and the upper cover body 3. According to this configuration, the main shaft 51 is the upper cover body (3) as the upper end is bearing-coupled to the upper cover body (3) in a state that is firmly coupled to the lower cover body (2) fixed to the ground ) Will be supported.

The drive motor 52 is installed on the lower cover body 2. As described above, the driving motor 52 may be connected to an external power supply line and may be driven by an external power supply, and may be driven by power supplied by the photovoltaic generator 61 which will be described later. . In this case, the drive motor 52 includes a speed reducer 521, and preferably, a speed ratio for rotating the main shaft 51 by 360 ° per minute may be provided, and the drive motor 52 and the main shaft 51 may be provided. ) Is powered by a cross-axis gear (522: or by a chain or pulley). Accordingly, the rotating plate 4 is connected to the main shaft 51 by the first and second rotating media 42 and 43 to rotate 360 ° per minute.

Here, as shown in FIG. 4B, the main shaft 51 ′ vertically installed on the upper and lower cover bodies 2 and 3 moves the coupling hole 23 ′ provided in the lower cover body 2 upward, that is, the upper portion. It is also possible to design a short length by axial coupling in the state projecting in the cover body 3 direction. At this time, by designing a wider coupling member 23 'protruding from the lower cover body 2 to secure the drive motor 52' to the coupling member 23 'to achieve a smooth power transmission relationship, the first In addition, the second rotation medium (42,43) is also coupled to only the upper portion of the rotating plate 4 as the main shaft is shortened.

The first power transmission gear 53 is axially coupled to the upper end of the main shaft 51. As described above, the first power transmission gear 53 has a cylindrical guide protrusion 531 protruded on one surface as shown in FIGS. 4A and 6, and one actuating protrusion 532 at a portion contacting the outer periphery of the guide protrusion 531. ) Has a configuration in which it protrudes. In this case, the interference protrusion groove 533 is provided in the guide protrusion 531 of the portion where the actuating protrusion 532 protrudes for smooth operation of the actuating protrusion 532.

The second power transmission gear 54 is axially coupled to the lower end of the power transmission shaft 64 to be described later. The second power transmission gear 54 has a structure that intermittently rotates with respect to the rotation of the first power transmission gear 53, as shown in Figs. 4a and 6, the guide of the first power transmission gear 53 It comprises a plurality of rotating projections 541 guided by the projections 531 and the operating grooves 542 provided between the rotating projections 541 and intermittently rotated at a predetermined angle by being caught by the operating projections 532. do. At this time, the second power transmission gear 54 rotates the installation frame 62 of the photovoltaic unit 6, which will be described later, and the installation frame 62 has an extremely low speed with respect to the rotating plate 4 described above. In order to have a ratio, the rotation speed of the first power transmission gear 53 is small, the diameter is large, and the number of teeth is configured to be large. Preferably, when the first power transmission gear 53 is rotated once, The operation grooves 542 are designed to be 10 to rotate 1/10, the number of the operation grooves 542 can be variable.

The solar power generation unit 6 is installed on the upper surface of the upper cover body (3). The photovoltaic unit 6 includes a power transmission shaft 64 and a photovoltaic generator 61 having an installation frame 62, a first internal gear 63, and a second internal gear 641. It is composed.

The mounting frame 62 is bearing-coupled to the upper surface of the upper cover body 3, as shown in Figure 4a so that it can rotate. The installation frame 62 is composed of an inclined surface inclined at an angle of 30˚ to 35˚, the upper surface is inclined such that the light collecting panel 611 of the photovoltaic generator 61, for example, a plurality of solar cell modules The light condensing panel 611 is arranged. In this case, the condensing panel 611 is arranged to install the solar cell module on a separate base plate (not shown in the drawing) so as to be separated from the installation frame 62, the installation frame 62 It can also be installed on the upper surface of the cabinet, detachably. According to such a configuration, the light collecting panel 611 is provided with an angle of incidence capable of collecting the maximum sunlight.

The first internal gear 63 is installed on the lower inner surface of the installation frame 62 as shown in Figs. The first internal gear 63 corresponds to a large gear in the structure of a conventional internal gear. At this time, the lower inner surface of the installation frame 62 is preferably provided with a groove for easily fixing the first internal gear 63.

The power transmission shaft 64 is axially coupled in a structure that vertically penetrates a predetermined portion of the upper cover body (3). In other words, the power transmission shaft 64 is bearing-coupled in a vertical structure to the upper cover body (3). At this time, the upper end of the power transmission shaft 64 protruding to the outside of the upper cover 3, the second internal gear 641 meshed with the first internal gear 63, that is, the structure of a conventional internal gear In the second internal gear 641 corresponding to the small gear is axially coupled, the second power transmission gear 54 is axially coupled to the lower end located inside the upper cover body (3).

According to such a configuration, the power transmission shaft 64 receives power by the second power transmission gear 54 which receives the rotational force intermittently from the first power transmission gear 53 and the second internal gear ( The rotating frame 641 and the second internal gear 641 transmits power to the first internal gear 63 to rotate the installation frame 62, thereby providing the installation frame 62 at a speed ratio of the rotating plate 4. Very low speed ratio is given. The preferred ratio of the speed of the rotating plate 4 and the mounting frame 62 is that when the rotating plate 4 rotates 360 degrees in one minute, the mounting frame 62 is rotated 360 degrees in 24 hours, that is, the mounting frame 62 is installed. The speed ratio at which the condensing panel 611 can track sunlight is given, which is the rotation speed, diameter and number of teeth of the second power transmission gear 54 with respect to the first power transmission gear 53 described above. With the adjustment of the number of grooves), the first internal gear 63 and the second internal gear 641 may be implemented by adjusting the rotation speed, diameter, and number of teeth.

On the other hand, the photovoltaic generator 61 including the light collecting panel 611 installed on the upper surface of the installation frame 62 includes a switchboard as shown in Figure 8, such a switchboard in the solar cell module of the light collecting panel 611 A battery that stores the collected electrical energy, the inverter connected to the battery or the solar cell module to convert DC power into AC power, and the battery or the inverter is electrically connected to supply the DC power of the battery to a user in a standalone manner; and In addition, the control unit (including a circuit board and a control board mounted with a control circuit) for supplying the AC power converted by the inverter to the user in a grid-connected configuration is configured to further comprise. (The switchboard is installed inside the installation frame. In this case, the grid-connected type is a DC power supply (inverter is directly connected to the solar cell module in a state in which the battery configuration is excluded). And supplied DC power) may be defined as a method of switching to AC power through an inverter and then sending it to a user (electric power company) through a control unit. The stand-alone type may include a DC motor stored in the battery. 52 and the required power of the lamp 32 can be defined in a manner to be supplied through the control unit. In addition, the controller further includes a function of controlling whether to supply the power of the driving motor 52 to the power obtained by photovoltaic power generation or to the external power supplied through an external power lead wire.

At this time, in the present invention in performing the above photovoltaic power generation through the light collecting panel 611 installed on the upper surface of the installation frame 62, the light collecting panel 611 is wider than the width of the upper surface of the installation frame 62 By constructing or configuring the installation frame 62 itself larger than the upper cover body 3, the light collecting panel 611 can be given the widest size as much as possible to increase the light collecting amount.

Thus, it will be described with respect to the operating state of the rotating information board according to the present invention having the configuration as described above.

9 and 10, when the information board 7 is attached to the outer surface (determined portion) of the rotating plate 4 of the present invention when the driving motor 52 is driven, As the main shaft 51 rotates, the rotating plate 4 connected by the main shaft 51 and the first and second rotation media 42 and 43 rotates. In addition, the first power transmission gear 53, the second power transmission gear 54, the power transmission shaft 64, the second internal contact coupled to the main shaft 51 of the installation frame 62 of the photovoltaic unit 6 Gear 641-first internal gear 63 in order to receive the power to rotate at a very low speed, in this case, the installation frame 62 is rotated at a very low speed corresponding to the sunrise position and the sunset position condensing panel 611 ) Tracks sunlight and maximizes the efficiency of light by concentrating as much sunlight as possible.

On the other hand, at night, the lamp 22.32 can be emitted to secure the night visibility of the information post 7 by illuminating the rotating plate 4, and the light emitted from the lamps 22 and 32 is the above-described photovoltaic generator 61. ) Can be emitted only at night.

In addition, during maintenance and repair of the internal gears 63 and 641 installed in the installation frame 62, the maintenance and repair work of each component is easily performed through an opening and closing door (not shown in the drawing) provided in the installation frame 62. Can be done.

Accordingly, the rotatable information bulletin board 1 according to the present invention uses the first and second power transmission gears 53 and 54 and the first and second internal gears 63 and 641 to rotate the rotational force of the main shaft 51. It can be delivered to the installation frame 62 of the unit 6 can improve the operating efficiency according to the simplification of the power transmission structure, the solar power generating unit 6, the solar photovoltaic generator 61 is installed, the rotary information board ( 1) can be integrated to improve space utilization efficiency, as well as to improve the light collection efficiency by allowing the light collecting panel of the photovoltaic generator 61 to track and collect sunlight.

It should be noted that the above-described embodiments are only illustrative and are not intended to limit the scope of the present invention so that those skilled in the art can readily understand and carry out the present invention. Accordingly, the rotation speed of the rotating plate and the mounting frame is driven by various modifications or modifications, for example, each of the electric motors connected to the main shaft and the power transmission shaft, and then driven by the separate control unit. It should be noted that can be controlled. The scope of the present invention is defined by the following claims in principle.

1: rotating information board 2: lower cover body
3: upper cover body 4: rotating plate
5: power transmission unit 6: solar power generation unit
7: degree post 21,31: rotary groove
22,32: Lamp 23,23 ', 33: Coupling
41: opening and closing door 42,43: first and second rotation media
51,51 ': Spindle 52,52': Drive motor
53: first power transmission gear 54: second power transmission gear
61: solar generator 62: installation frame
63: first internal gear 64: power transmission shaft

Claims (3)

An upper cover body including a lower cover body and an installation frame in which a light collecting panel of the solar cell generator is inclined on the upper surface, an upper cover body installed on the upper surface, a main shaft axially coupled to the lower cover body and the upper cover body, and In the rotary information board comprising a drive motor installed on the lower cover body for transmitting a rotational force to the main shaft and consisting of a power transmission unit for rotating the rotating plate installed between the lower cover body and the upper cover body,
The photovoltaic power generation unit is axially coupled in a structure in which a lower surface of the mounting frame is bearing-coupled to the upper cover body, and a first internal gear installed on the lower inner surface of the mounting frame and vertically penetrates a predetermined portion of the upper cover body. The second internal gear meshed with the first internal gear in a closed state includes a power transmission shaft installed at an upper end thereof,
The power transmission unit is axially coupled to the upper end of the main shaft and coupled to the first power transmission gear having a guide projection and an actuating projection on one surface, the lower end of the power transmission shaft and guided to the guide projection of the first power transmission gear to rotate And a second power transmission gear provided between the plurality of rotating protrusions and the rotating protrusions, the second power transmission gear including an operating groove intermittently rotated at a predetermined angle by being caught by the operating protrusion.
The method of claim 1,
The rotating plate is formed in a cylindrical shape so that the upper end and the lower end can be fitted into the rotary groove corresponding to the lower cover body and the upper cover body, the inner surface of the rotating plate is axially coupled to the main shaft to rotate; Rotating information board, characterized in that the connecting rods of the second rotation medium, each fixed.










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