KR200163508Y1 - Apparatus for driving intermittently two-side projection type advertizing film - Google Patents

Abstract

The present invention uses two driving motors and a directional gear to simultaneously drive the advertising film located on the front and rear surfaces, and transmits the advertising film on both sides by using a projection lamp located between the front advertising film and the rear advertising film. An intermittent drive of a double-sided projection type advertising machine, the frame 30 having a front opening portion 31 and a rear opening portion 32 on the front and rear surfaces, and the front side of each of the front and rear surfaces of the frame 30 The front opening 31 and the rear opening 32 are opened and closed while being guided by the hinge 40 and the rear hinge 42, and the front transparent plate 51a and the rear transparent plate 52a which transmit light are respectively opened. The front cover 51 and the rear cover 52, and the front cover 51 and the rear cover 52, the left and right sides of the inner side at a predetermined distance between the predetermined axis is installed rotatably respectively the front advertising film 60 and the rear First front side to which the advertisement film 61 is wound or unwound The spool 70, the second front side spool 71, the first rear side spool 72 and the second rear side spool 73, the front cover 51 and the rear cover 52 are connected to the frame 30. Locking mechanism 80 to be coupled or separated from each other, and rotatably installed at predetermined intervals between left and right sides of the frame 30, respectively, so that the first driving motor 90 and the second driving motor 91 are rotated. The first driving gear 92 and the second driving gear 93 and the first driving gear 92 and the second driving gear 93 are respectively engaged with each other to transmit power by the first driving gear 92. 92) and a first turning gear 94 and a second turning gear 95 which are rotated in a direction opposite to the rotational direction of the second driving gear 93, and the first front spool 70 and the first turning gear 94; (2) The rotational force transmitted from the first driving gear 92 and the second driving gear 93 in the state directly connected to the front spool 71 is transferred to the first front spool 70 and the second. Delivered to the front spool (71) The first driving gear in a state in which it is directly connected to the first front side driven gear 96 and the second front side driven gear 97, and the first rear side spool 72 and the second rear side spool 73; 92) and the first rear driven gear 98, which is engaged with the second drive gear 93 and transmits the rotational power transmitted therefrom to the first rear spool 72 and the second rear spool 73; And a projection lamp LP1 (LP2) installed at the center of the second rear driven gear 99 and the frame 30 to radiate the light transmitted through the front advertising film 60 and the rear advertising film 61. (LP3) (LP4) (LP5) (LP6) (LP7) (LP8).

Description

Intermittent Drive of Double Sided Advertising Machine

The present invention relates to an intermittent driving device of a double-sided projection type advertising machine. More specifically, the front advertising film and the rear advertising film are driven at the same time by simultaneously driving the advertising film located at the front and rear surfaces by using two driving motors and the changeover gear. It relates to an intermittent driving device of a double-sided projection advertising machine to transmit the advertising film on both sides by using the projection lamp positioned between the.

Conventional projection advertising machine has a transparent plate 11 is installed on the front of the advertising case 10, as shown in Figure 1 and 2 of the accompanying drawings, the rear cover is fastened by a bolt 12 (13) were installed, and two spools (15) (16) wound around one side and the other end of the advertising film (14), respectively, on both sides of the inside of the fixed state so as to be rotatable with a predetermined interaxial distance. When one of the spools 15 and 16 is intermittently rotated by the drive motors 17 and 18 connected to the spools 15 and 16, the remaining spools 15 are pulled out by the tension of the advertisement film 14. 16 and the driving motors 17 and 18 were configured to idle in idle state, while preventing the advertisement film 14 from being inclined according to the amount wound on the spools 15 and 16. The idle rollers 20 and 21 are provided to maintain a constant distance from the 11 and are installed at the rear of the advertising case 10. The light emitted from the projection lamps 22a, 22b, 22c, 22d, and 22e was transmitted through the advertising film 14 and the transparent plate 11 on the front side.

In addition, the light emitting element 23 and the light receiving element 24 are provided on both sides of the advertising film 14, the light emitted from the light emitting element 23 at the stop position and the distal end of the advertising film 14 is provided. It is configured to automatically detect the stop position and the distal end position by passing through the light transmitting hole 14a passing through and intermittently drive or reversely rotate the drive motors 17 and 18.

However, such an intermittent driving device of the conventional double-sided projection advertising machine is a drive motor 17, 18 and projection lamps 22a, 22b, 22c, 22d, 22e that require large power. Since it is configured to be located in the case 10 and the rear cover 13, it is necessary to repair or check the projection lamps 22a, 22b, 22c, 22d, 22e or the driving motors 17 and 18. The projection lamps 22a, 22b, 22c in the process of opening the rear cover 13 in the event that other rear cover 13 needs to be opened, such as replacing the advertising film 14 with another one. (22d) (22e) or the wire harness 26 connected to the drive motor (17) (18) had a problem coming out or entangled along the rear cover (13), the rear cover (13) In the process of detaching or joining the case 10, the work is very cumbersome since the work of loosening or tightening the bolt 12 connecting the two is involved. It had a problem in that.

In addition, when double-sided advertising is carried out in the middle of a road or on the roof of a building, the above-described projection type advertising machine uses only one side as the advertisement surface, so it is used in a state overlapping with the front and rear surfaces, which is a considerable cost burden to the buyer with the advertisement machine. There was an uneconomical problem that aggravated, and when maintaining them, the rear cover 13 was overlapped with each other, and thus had a considerable difficulty in separation.

The present invention has been made to solve the above problems, the purpose of which is to prevent the entanglement of the power line and signal line when opening and repairing the projection advertising, and can also open the cover more easily, both It is to provide an intermittent driving device of a double-sided projection type advertising machine capable of driving the advertising film of both sides transparent on both sides by two motors.

In order to achieve the object of the present invention, the front and rear openings in the frame having a front and rear openings, and the front and rear hinges are respectively located on the front and rear surfaces of the frame while opening and closing the front and rear openings. The front cover and the rear cover respectively having a front transparent plate and a rear transparent plate that transmit light, and the front cover and the rear cover are rotatably installed at predetermined intervals between left and right sides inside the front cover and the rear cover, respectively. A first front spool and a second front spool and a first rear spool and a second rear spool to which the advertisement film is wound or unwound; a locking mechanism for engaging or separating the front cover and the rear cover from the frame; The first driving motor and the second driving motor are rotatably installed at predetermined intervals between the inner left and right sides of the frame. A first drive gear and a second drive gear which receive each power, and a first drive gear and a second drive gear meshed with the first drive gear and the second drive gear to rotate in a direction opposite to the rotation direction of the first drive gear and the second drive gear. The rotational power transmitted from and engaged with the first drive gear and the second drive gear in a state of being directly connected to the first gear and the second gear and the first front spool and the second front spool. The first drive in a state directly connected to the first front side driven gear and the second front side driven gear transmitted to the first front side spool and the second front side spool, and the first rear spool and the second rear side spool; A first rear driven gear and a second rear driven gear for transmitting the rotational power transmitted from the gear and the second driving gear to the first rear spool and the second rear spool, and the center of the frame. Installed in the front and rear advertising film Provided is an intermittent drive of a double-sided projection advertising machine, including a projection lamp for emitting transmitted light.

1 is a plan sectional view showing the configuration of a conventional cross-sectional projection type advertising machine.

Figure 2 is a front sectional view showing the configuration of a conventional cross-sectional projection type advertising machine.

Figure 3 is an exploded perspective view showing the configuration of the intermittent drive of the double-sided projection type advertising machine according to the present invention.

Figure 4 is a perspective view of the open state showing the configuration of the intermittent drive of the double-sided projection advertising machine according to the present invention.

5 is a transparent perspective view showing the interior of the intermittent drive of the double-sided projection type advertising machine according to the present invention.

6 is a plan view schematically showing an operation of driving the front and rear advertising film in the forward direction by the intermittent driving device of the double-sided projection advertising machine according to the present invention.

7 is a plan view schematically showing the operation of driving the front and rear advertising film in the reverse direction by the intermittent driving device of the double-sided projection advertising machine according to the present invention.

8 is a front view showing the configuration of the intermittent drive of the double-sided projection type advertising machine according to the present invention.

9 is a cross-sectional view taken along line A-A of FIG. 4 showing the mounting portion of the front transparent plate and the rear transparent plate in the double-sided projection advertising machine according to the present invention.

10 is a cross-sectional view taken along line B-B of FIG. 4 showing the edges of the front cover and the rear cover in the double-sided projection advertising machine according to the present invention.

Figure 11 is an enlarged perspective view showing the drive system of the right part in the intermittent drive of the double-sided projection type advertising machine according to the present invention.

Figure 12 is an enlarged perspective view showing the drive system of the left part in the intermittent drive of the double-sided projection advertising machine according to the present invention.

* Explanation of symbols for main parts of the drawings

31: front opening 73: second rear spool

32: rear opening 80: locking mechanism

30 frame 90: first drive motor

40: front hinge 91: second drive motor

42: rear hinge 92: first drive gear

51a: front transparent plate 93: second drive gear

52a: rear transparent plate 94: first turning gear

51: front cover 95: second direction change gear

52: rear cover 96: first front driven gear

60: front advertising film 97: second front driven gear

61: rear advertising film 98: first rear driven gear

70: first front side spool 99: second rear side driven gear

71: second front side spool 72: first rear side spool

LP1, LP2, LP3, LP4, LP5, LP6, LP7, LP8: Projection lamp

Figure 3 is an exploded perspective view showing the configuration of the intermittent driving device of the double-sided projection advertising machine according to the present invention, Figure 4 is a perspective view of the open state showing the configuration of the intermittent driving device of the double-sided projection advertising machine according to the present invention, 5 is a transparent perspective view showing the interior of the intermittent drive of the double-sided projection advertising machine according to the present invention, Figure 6 is a front and rear advertising film in the forward direction by the intermittent drive of the double-sided projection advertising machine according to the present invention. FIG. 7 is a plan view schematically showing a driving operation, and FIG. 7 is a plan view schematically showing an operation in which the front and rear advertising film is driven backward by an intermittent driving device of a double-sided projection advertisement machine according to the present invention. The front view showing the configuration of the intermittent drive of the double-sided projection advertising machine according to the invention, Figure 9 is a front transparent plate and the double-sided projection advertising machine according to the present invention 4 is a cross-sectional view taken along line AA of FIG. 4 showing the mounting portion of the rear transparent plate, and FIG. 10 is a cross-sectional view taken along line BB of FIG. 4 showing the edges of the front cover and the rear cover in the double-sided projection advertisement machine according to the present invention. An enlarged perspective view showing the drive system of the right part in the intermittent drive of the double-sided projection advertising machine according to the present invention, Figure 12 is an enlarged perspective view showing the drive system of the left part in the intermittent drive of the double-sided projection advertising machine according to the present invention As shown therein, the frame 30 having the front opening portion 31 and the rear opening portion 32 on the front and rear surfaces, and the front hinge 40 and the rear hinge are positioned on the front and rear surfaces of the frame 30, respectively. The front cover 51 and the rear cover which are guided by the 42 and open and close the front opening 31 and the rear opening 32, respectively having a front transparent plate 51a and a rear transparent plate 52a for transmitting light. A cover 52 and the front surface First front side spool 70 in which the front advertising film 60 and the rear advertising film 61 are wound or unwound, respectively, rotatably installed at predetermined intervals between the left and right sides of the burr 51 and the rear cover 52. And a second front spool (71), a first rear spool (72), a second rear spool (73), and the front cover (51) and the rear cover (52) to the frame (30). Locking mechanism 80 to be separated or separated, and is installed rotatably at a predetermined interval between the left and right sides of the frame 30, respectively, by the first drive motor 90 and the second drive motor (91) Respectively, the first driving gear 92 and the second driving gear 93 that receive power are engaged with the first driving gear 92 and the second driving gear 93, and the first driving gear 92 and A first turning gear 94 and a second turning gear 95 which are rotated in a direction opposite to the rotational direction of the second driving gear 93, the first front spool 70 and the second front side;The first front side spool 70 and the second front side spool are coupled to the first drive gear 92 and the second drive gear 93 and transmitted therefrom in a state directly connected to the pool 71. In a state in which it is directly connected to the first front side driven gear 96 and the second front side driven gear 97 to be transmitted to the 71, and the first rear side spool 72 and the second rear side spool 73; A first rear gear that engages with the first drive gear 92 and the second drive gear 93 and transmits the rotational force transmitted therefrom to the first rear spool 72 and the second rear spool 73; Projection which is provided at the side driven gear 98 and the second rear driven gear 99 and the center of the frame 30 to radiate light passing through the front advertising film 60 and the rear advertising film 61. Lamps LP1 (LP2) (LP3) (LP4) (LP5) (LP6) (LP7) (LP8).

Here, the first driving motor 90 and the second driving motor 91 are fixed to the upper side of the frame 30 by using the plurality of bolts 90a and 91a.

The boss 92a is coupled to the first driving gear 92 and the second driving gear 93 so as to be coupled to the motor shafts 90s and 91s of the first driving motor 90 and the second driving motor 91, respectively. ) 93a was formed and fixed using the set screws 180 and 182.

A plurality of fastening bolts B1 and B2 are disposed on the first front driven gear 96, the second front driven gear 97, the first rear driven gear 98 and the second rear driven gear 99. The shaft 120 protruding downward from the upper bearing blocks 100, 110, 112, 114 installed on the ceiling of the front cover 51 and the rear cover 52 by B3 and B4. Bosses 96a, 97a, 98a, and 99a fitted to the 122, 124, and 126, and penetrate through the bosses 96a, 97a, 98a, and 99a. 120, 122, 124 and 126 were pressed using set screws 130, 132, 134 and 136.

In addition, the first turning gear 94, the second turning gear 95 from the upper bearing block 116, 118 is installed on the ceiling of the frame 30 by the fastening bolts (B5) (B6). A set screw for forming bosses 94a and 95a fitted to the shafts 128 and 129 protruding downward, and forcing the shafts 128 and 129 through the bosses 94a and 95a. (138) (139).

Flat chamfers 70a, 71a and 72a are formed at upper ends of the first front side spool 70, the second front side spool 71, the first rear side spool 72 and the second rear side spool 73. ) 73a, and through holes 70b, 71b, 72b, and 73b penetrating through the chamfers 70a, 71a, 72a, and 73a to drive the first front side. Shafts 120, 122, 124 protruding downward through the gear 96, the second front driven gear 97, the first rear driven gear 98, and the second rear driven gear 99. Bolts (120b) (122b) (124b) (126b) having through holes (120a) (122a) (124a) (126a) formed at the bottom of the (126), and then penetrating them ( 120c) (122c) (124c) (126c) and nuts (120d) (122d) (124d) (126d) were connected using the first front side spool (70), the second front side spool (71), Lower bare portions of the first rear spool 72 and the second rear spool 73 are fixed to the bottom surface of the frame 30 by fastening bolts B11, B12, B13 and B14. Block 160 was adapted to 162 thrust that is inserted into the 164 (166) to insert the inner ring of the bearing 170, 172, 174, 176, support the load acting in the axial direction.

The front transparent plate 51a and the rear transparent plate 52a form rectangular transparent plate fixing holes 51h and 52h formed in the front cover 51 and the rear cover 52, and the transparent In the plate fixing holes 51h and 52h, flange portions 51p are formed to hold the front transparent plate 51a and the rear transparent plate 52a, respectively.

In addition, the front idler rollers R1, R2, R3, R4 and rear idler rollers R5 and R6, which are idling in contact with the inner edges of the front advertising film 60 and the rear advertising film 61. (R7) (R8) roller fixing shaft (S1) (S2) (S3) (vertical upper and lower ends respectively fixed to the ceiling and bottom surface of the front cover 51 or the rear cover 52, respectively) S4) was installed so that the front advertising film 60 and the rear advertising film 61 is always intermittently transported while maintaining a constant distance from the front transparent plate 51a and the rear transparent plate 52a.

The locking mechanism 80 is installed on the opposite side of the front hinge 40 and the rear hinge 42, the frame 30 is provided with latches 81, 82, 83, 84, The front cover 51 and the rear cover 52 are provided with striker portions 85, 86, 87 and 88 which are locked or detached from the latch portions 81, 82, 83 and 84. .

The frame 30, the front cover 51 and the rear cover 52 have flanges 30g, 30h, 51g and 52g that are bent inwardly to the edges of the frame 30 and the front cover ( 51) or when the rear cover 52 is displaced to prevent the inside from being exposed and at the same time to prevent dust or foreign matter from flowing into the inside.

In addition, vents 30k and 30s for heat dissipation are respectively formed on one side lower portion and the other side upper portion of the frame 30, and a fan motor 30t is installed therein.

Reference numerals 150 and 152 in the drawing indicate the projection lamps LP1, LP2, LP3, LP4, LP5, LP6, LP7, and LP8 perpendicular to the ceiling and the bottom surface of the frame 30. 154 and 156 represent a supporting leg fixed under the frame 30, and W represents a wire harness.

Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings.

First, when the front advertising film 60 intermittently moves in the direction of arrow C in the drawing as shown in FIGS. 5 and 7 of the accompanying drawings, when the first driving motor 90 intermittently rotates in the direction of arrow D in the drawing The rotational power generated from the first driving motor 90 is respectively provided to the first front driven gear 96 and the first turning gear 94 on both sides through the first driving gear 92 installed on the motor shaft. The first forward driven gear 96 is intermittently rotated in the direction of arrow E in the drawing, and the first turning gear 94 is intermittently rotated in the direction of arrow F in the drawing.

At the same time, the first front-side driven gear 96 rotates the first front-side spool 70 in the same direction to wind the front advertising film 60 in the direction of arrow C in the figure, and on the other hand, changes the first direction. Through the gear 94, the first rear driven gear 98 is rotated in the direction of arrow G in the figure opposite to the first front driven gear 96, and the first rear spool 72 is rotated in the same direction. By rotating the rear advertising film 61 is wound in the direction of the arrow H in the drawing.

That is, the rotational power generated from the first driving motor 90 is transmitted to both sides through the first front driven gear 96 and the first turning gear 94. The transmission path is as follows.

The path for driving the front advertising film 60 is “first driving motor 90 → first driving gear 92 → first front driven gear 96 → first front side spool 70 → front advertising film. (60) ", the path for driving the rear advertising film 61 is the" first drive motor 90 → the first drive gear 92 → the first turn gear (94) → the first rear side Power is transmitted while being driven to the driven gear 98 → the first rear side spool 72 → the back advertising film 61.

At this time, the second front side spool 71 and the second rear side spool 73 are rotated in the direction of arrow I and L in the drawing by the front advertising film 60 and the rear advertising film 61, respectively. To rotate the second front driven gear 97 and the second rear driven gear 99 in the direction and are positioned between the second front driven gear 97 and the second rear driven gear 99. The second driving gear 93 and the second turning gear 95 are intermittently rotated in the direction of arrow J and K in the drawing, and the second driving motor 91 is idling in the same direction as the second driving gear 93. .

At this time, the first front side spool 70, the second front side spool 71, the first rear side spool 72 and the second rear side spool 73 are installed on the upper and lower ceilings and the bottom surface of the frame 30. The first bearing 100 is rotated horizontally while receiving the rotation guidance of the upper bearing blocks 100, 110, 112, 114 and the lower bearing blocks 160, 162, 164, 166. And a second turning gear 95 also moves horizontally while receiving rotational guidance of the upper bearing blocks 116 and 118 installed on the ceiling of the frame 30, the front advertising film 60 and the rear side. The advertising film 61 is guided by the front idle rollers R1, R2, R3, R4 and rear idle rollers R5, R6, R7, and R8 installed on the frame 30. The intermittent transfer is performed while maintaining a constant distance from the transparent plate 51a and the rear transparent plate 52a.

That is, when the light transmission hole H1 formed in the front advertising film 60 and the rear advertising film 61 or either side is positioned between the light emitting device LED and the light receiving device PD, the light is emitted from the light emitting device LED. When the light is detected by the light receiving element PD through the light transmission hole H1, the first driving motor 90 is intermittently driven.

In the above state, when the projection lamps LP1, LP2, LP3, LP4, LP5, LP6, LP7 and LP8, which are standing vertically in the center of the frame 30, are lit, the light is translucent. Advertised through the front advertising film (60) and the rear advertising film (61) through the front transparent plate (51a) and the rear transparent plate (52a) respectively printed on the front advertising film (60) and the rear advertising film (61). The screen will appear bright.

Meanwhile, the front advertising film 60 and the rear advertising film 61 released from the second front side spool 71 and the second rear side spool 73 are the first front side spool 70 and the first rear side spool ( 72, respectively, and wound up all the more, the front advertising film 60 and the rear advertising film 61 or the end detection hole (H2) formed on either side of the light emitting element (LED) and the light receiving element (PD) As detected by this time, the first driving motor 90 is in an idling state and the second driving motor 91 is rotated in the direction of arrow N in the drawing as shown in FIG.

At this time, the rotational power generated from the second driving motor 91 is transmitted to the second front side driven gear 97 and the second turning gear 95 on both sides through the second driving gear 93 installed on the motor shaft. Thus, the second front driven gear 97 is intermittently rotated in the direction of arrow O in the figure, and the second turning gear 95 is intermittently rotated in the direction of arrow P in the figure.

At the same time, the second front-side driven gear 97 rotates the second front-side spool 71 in the same direction to wind the front advertising film 60 in the direction indicated by the arrow N in the drawing, and on the other hand, switches the second direction. The second rear driven gear 99 is rotated in the direction of the arrow Q in the drawing in the direction opposite to the second front driven gear 97 via the gear 95, thereby moving the second rear spool 73 in the same direction. By rotating, the rear advertising film 61 is wound in the direction of arrow R in the figure.

That is, the rotational power generated from the second driving motor 91 is transmitted to both sides through the second front driven gear 97 and the second rear driven gear 99, and the transmission path thereof is as follows.

The path for driving the front advertising film 60 is “second drive motor 91 → second driving gear 93 → second front driven gear 97, second front spool 71, and front advertising film. (60) ", the path for driving the rear advertising film 61 is" second drive motor 91 → second drive gear (93) → second direction change gear (95) → second rear side Power is transmitted while being driven to the driven gear 99 → the second rear spool 73 → the rear advertising film 61 ”.

At this time, the first front side spool 70 and the second front side spool 71 are rotated in the direction of arrows V and S in the drawing by the front advertising film 60 and the rear advertising film 61, respectively. To rotate the first front side driven gear 96 and the first rear side driven gear 98 in the direction and are positioned between the first front side driven gear 96 and the first rear side driven gear 98. The first drive gear 92 and the first turning gear 94 are intermittently rotated in the direction of the arrow U and T in the drawing, and are idling in the same direction as the first driving motor 90 and the first driving gear 92.

In the above state, when the projection lamps LP1, LP2, LP3, LP4, LP5, LP6, LP7 and LP8, which are standing vertically in the center of the frame 30, are lit, the light is translucent. Advertised through the front advertising film (60) and the rear advertising film (61) through the front transparent plate (51a) and the rear transparent plate (52a) respectively printed on the front advertising film (60) and the rear advertising film (61). The screen will appear bright.

In addition, when the front cover 51 or the rear cover 52 is opened as shown in FIG. 4, first, a locking tool that binds the frame 30 and the front cover 51 or the rear cover 52 first. When the front cover 51 or the rear cover 52 is rotated in the direction of arrow X or Y in the figure after releasing the 80, the front cover 51 or the rear cover 52 is the front hinge 40, respectively. And it is opened while being rotated about the rear hinge 42, the first front driven gear 96 and the second front driven gear 97 and the first rear driven gear 98 and the second rear driven The gear 99 is rotated together with the front cover 51 and the rear cover 52, respectively, so that the first driving gear 92 and the second driving gear 93, the first turning gear 94 and the second turning gear are respectively. Departure from the turning gear (95).

When closing the front cover 51 and the rear cover 52 as described above when closing the front cover 51 and the rear cover 52 in the opposite direction to the opening direction, the front hinge ( 40) and the rear hinge 42 is closed while being guided, and at the same time the first front driven gear 96 and the second front driven gear 97 installed on the front cover 51 are closed by a frame ( It is engaged with the first drive gear 92 and the second drive gear (93) installed in the 30) to be able to receive the power from it, the first rear driven driven installed on the rear cover (52) The gear 98 and the second rear driven gear 99 are engaged with the first turning gear 94 and the second turning gear 95 installed in the frame 30 to receive power therefrom. It becomes a state.

At this time, the first driving motor 90 and the second driving motor 91 that require electric power and the projection lamps LP1, LP2, LP3, LP4, LP5, LP6, LP7, and LP8 are frames. Since it is installed in the 30, the wiring of the wire harness W is made possible through the frame 30 without passing through the front cover 51 and the rear cover 52, and thus the front cover 51 or the rear cover 52. In order to prevent the interference with the wire harness (W) during the opening and closing process.

As described above, the present invention has the effect of generating a double-sided advertisement effect by using the same number of driving motors and projection lamps or fewer projection lamps, compared to the conventional single-sided projection type advertisement advertising using only one side. As a result, it is possible to reduce the waste of power and reduce the cost of maintenance and operation of the advertising machine. In addition, when two-sided advertising is performed using a single-sided projection machine as before, two units are purchased before and after each other. Since it is possible to do double-sided advertisement in one Taiwan without overlapping in the direction, it is effective to reduce the cost of purchasing the advertisement, and to allow the wire harness leading to the projection lamp or driving motor in the advertisement to pass through the center frame. Since the structure is installed, when opening or closing the front cover or back cover of the advertising machine This prevents the varnish from being entangled, making it easy to replace the lamp and the advertising film. Moreover, the locking mechanism using the latch and the striker, which is easy to separate and coupled, is not a bolted fastening method. Since the configuration using the hinge, there is an effect that can be opened and closed faster and easier.

Claims (1)

A frame 30 having a front opening portion 31 and a rear opening portion 32 in the front and rear surfaces; Located at the front and rear surfaces of the frame 30 and guided by the front hinge 40 and the rear hinge 42, the front opening 31 and the rear opening 32 are opened and closed, and the front penetrates light. A front cover 51 and a rear cover 52 each having a transparent plate 51a and a rear transparent plate 52a; First front side spools rotatably installed at predetermined intervals between the left and right sides of the front cover 51 and the rear cover 52 so that the front advertising film 60 and the rear advertising film 61 are wound or unwound. 70 and second front side spools 71 and first rear side spools 72 and second rear side spools 73; A locking mechanism (80) for engaging or separating the front cover (51) and the rear cover (52) from the frame (30); First drive gears 92 each of which is rotatably installed at predetermined intervals between the inner left and right sides of the frame 30 to receive power by the first driving motor 90 and the second driving motor 91, respectively. ) And the second driving gear 93, the first driving gear 92 and the second driving gear 93 are engaged with each other and the rotation direction of the first driving gear 92 and the second driving gear 93. A first turning gear 94 and a second turning gear 95 rotated in opposite directions; In the state directly connected to the first front side spool (70) and the second front side spool (71) is engaged with the first drive gear (92) and the second drive gear (93) is a rotational power transmitted therefrom A first front-side driven gear 96 and a second front-side driven gear 97 which are transmitted to the first front-side spool 70 and the second front-side spool 71; In the state directly connected to the first rear spool 72 and the second rear spool 73, the rotational power transmitted from the first driving gear 92 and the second driving gear 93 is transmitted. A first rear driven gear 98 and a second rear driven gear 99 which are transmitted to the first front side spool 72 and the second rear side spool 73; Projection lamps LP1 (LP2) (LP3) (LP4) (LP5) (LP6) installed at the center of the frame (30) to emit light passing through the front advertising film (60) and the rear advertising film (61). (LP7) (LP8) intermittent drive of the double-sided projection type advertising machine, characterized in that it comprises.