JPH01287596A - Advertisement display device - Google Patents

Abstract

PURPOSE:To reduce the play of triangular poles by controlling the stop positions of the triangular poles by the engagement between longitudinal grooves of a cam and teeth of a gear part. CONSTITUTION:This device is provided with a gear 22 which is provided coaxially with the rotary shaft 21 of a triangular pole 1 and has teeth 23 outside, the cam 24 which has a driving shaft 29 at right angles to the rotary shaft 21 of the triangular pole 1, longitudinal grooves 25 provided to the cam 24 so that when the grooves engages the teeth 23, the gear 22 is not rotated even by the rotation of the cam 24, slanting grooves 26 which rotate the gear 22 associatively with the rotation of the cam 24 when engaging the teeth 23, and a driving part 9 which rotates the cam 24. Thus, the stop position of the triangular pole 1 is controlled by the engagement between the longitudinal grooves 25 of the cam 24 and the teeth of the gear 22. Consequently, an irregularity in the display plane between triangular poles 1 is reduced and a change in the number of triangular poles 1 can easily be handled by varying the number of cams 24.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an advertising display device for buses and vending machines.

2. Description of the Related Art In recent years, there has been a demand for eye-catching advertising display devices whose display changes at regular intervals.

An example of the above-mentioned conventional display device will be described below with reference to the drawings of FIGS. 4 and 5.

Numeral 1 is a triangular pillar with letters and pictures drawn on its surface, and a plurality of them are arranged side by side at a constant interval A. 2 is a rotating shaft fixed at the center of the triangle and protruding outward.

3 and 3a are a pair of guide plates that rotatably support the axis of the triangular prism 1. The guide plate 3 has the rotating shaft 2
A bearing 4 that pivotally supports the is fixed, and mutual guide plates 3,
3a is locked with locking plates 5, 5a and fixed with screws 6. Further, a gear 7 is fixed to one end of the rotating shaft 2 with a screw 8. The drive belt 11 is engaged with the gear train of the gear 7 and the drive gear 1Q of the drive section 9 located at the lower end.

12 is a control device that stops the triangular prism 1 for a certain period of time when it has rotated 1200 times.

The operation of the display device configured as described above will be described below.

When the drive unit 9 drives the drive gear 10, the drive belt 11
The driving force is transmitted to the gears 7, and each gear 7 rotates synchronously. Each triangular prism 1 arranged in parallel is rotated by the rotation of the gear 7 and the drive gear 10, and is stopped in the same plane for a certain period of time every 1000 rotations by the control device 12.

Since it moves intermittently every 120° rotation, by drawing three types of designs on the surface of the triangular prism 1, a display panel that changes into three types can be created.

-Problems to be Solved by the Invention However, in the conventional configuration described above, mechanically, a gap is required between the meshing portions of the gear 7, the drive gear 1o, and the drive belt 11, so that the surfaces of each triangular prism 1 are uniform when stopped. It was not aligned on a flat plane.

The present invention solves the above-mentioned conventional problems, and provides an advertisement display device that can reduce the non-uniformity of the surface of a triangular prism when it is stopped.

Means for Solving the Problems To achieve this object, the advertising display device of the present invention includes a gear coaxial with a rotation axis of a triangular prism and having a plurality of teeth on the outside; A cam having a drive shaft perpendicular to the shaft, a vertical groove provided in the cam so that the gear does not rotate even if the cam rotates when the cam meshes with the teeth of the gear, and a longitudinal groove that meshes with the teeth. In this case, the cam includes a diagonal groove provided on the cam so as to rotate the gear in conjunction with the rotation of the cam, and a drive section that rotates the cam.

Function: With this configuration, the stopping position of the triangular prism can be regulated by the engagement between the longitudinal groove of the cam and the teeth of the gear portion, so that rattling of the triangular prism can be reduced.

Embodiment Hereinafter, an advertisement display device according to an embodiment of the present invention will be described with reference to the drawings of FIGS. 1 to 3.

Note that the same configurations and operations as those of the conventional example are given the same numbers, and detailed explanation thereof will be omitted. In the same figure,
Reference numeral 20 denotes a guide plate that rotatably supports the rotating shaft 2 at two constant intervals A. 21 is a rotating shaft protruding outward on the opposite side of the shaft 2. 22 is a gear having a plurality of teeth 23 outward from the center of the rotating shaft 21. 24 is the rotation axis 21 of the triangular prism 1
This is a cam in which a drive shaft 29, which is perpendicular to the cam, passes through the center and is fixed. Reference numeral 26 denotes a vertical groove that is continuously provided on the surface of the cam 24 over half the circumference and parallel to the rotational direction of the rotating shaft 21, and meshes with the teeth 23. 26 is a diagonal groove provided half the circumference on the surface of the cam 24, and has one end continuous with the vertical groove 24 at an angle and the other end open.
% and diagonal groove 26i.

2e is composed of three portions of oblique grooves 260 provided at intervals of distance B between teeth 230 and teeth 23, respectively. Then, the diagonal groove 26a, the diagonal groove 260, and the diagonal groove 26
0 and the diagonal groove 26C are overlapped so that each of the two teeth 23 has time to mesh with the diagonal groove 26 at the same time. The end of the drive shaft 29 is a drive section 9 that rotates the drive shaft 29.
are connected. 30 is a bearing that rotatably supports the rotating shaft 21.

The operation of the advertisement display device configured as described above will be explained.

When the drive unit 9 operates, the drive shaft 29 rotates and the cam 24
rotates. The teeth 23a of the gear 22 in FIG. Since it is provided parallel to the direction, the tooth 23a does not move. When rotated to part b, the teeth 23a rotate along the oblique grooves 26a. From the 0th part of the diagonal groove 26, the next tooth 230 and the diagonal groove 260 engage with each other, and when the 0th part ends, the triangular prism 1 rotates 600 times. In the d part, the tooth 230 rotates, and in the 0 part, the tooth 23c and the diagonal groove 26 rotate.
When C engages, triangular prism 1 rotates 60 degrees.

At section f, the teeth 23C and the longitudinal grooves 2B engage, and the triangular prism 1 does not rotate until it reaches section b.

In the embodiment, the number of teeth of the gear 22 is six, but in order to rotate a triangular prism, any number of teeth may be a multiple of three.

As described above, the gear 22 is provided coaxially with the rotation axis 21 of the triangular prism 1 and has a plurality of teeth 23 on the outside, and the cam 24 has the drive shaft 29 perpendicular to the rotation axis 21 of the triangular prism 1.
A vertical groove 25 is provided on the cam 24 to prevent the gear 22 from rotating even if the cam 24 rotates when it meshes with the teeth 23 of the gear 22. The diagonal groove 26 that rotates the cam 24
By providing a drive unit 9 that rotates the triangular prism 1
Since the stopping position of the cam 24 can be regulated by the engagement between the longitudinal groove 25 of the cam 24 and the gear 22, the non-uniformity of the display plane between the triangular prisms 1 can be reduced. 1. In addition, the adjacent cam 24
are connected by the convex part 27 and the concave part 28,
By changing the number of cams 24, changes in the number of triangular prisms 1 can be easily accommodated.

Effects of the Invention As described above, the present invention provides a gear that is coaxial with the rotation axis of a triangular prism and has a plurality of teeth on the outside, a cam that has a drive shaft perpendicular to the rotation axis of the triangular prism, and teeth of the gear. By providing a vertical groove on the cam so that the gear does not rotate even if the cam rotates when engaged with the cam, a diagonal groove that rotates the gear, and a drive section 9 that rotates the cam, the triangular prism Since the stop position can be regulated by the longitudinal groove of the cam and the meshing of the gear, it is possible to reduce the non-uniformity of the display plane between the triangular prisms.

Additionally, if adjacent cams are connected by a convex portion and a concave portion, changing the number of cams can easily accommodate changes in the number of triangular prisms, and therefore the advertising area can be easily varied. This makes it possible to realize an excellent advertisement display device.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an advertisement display device according to an embodiment of the present invention, FIG. 2 is a plan view of the main part of FIG. 1, and FIG.
FIG. 4 is a perspective view of the external appearance of a conventional advertisement display device, and FIG. 5 is a side sectional view of FIG. 4. 1...triangular prism, 21...rotation axis, 22
...Gear, 23...Teeth, 24...
...Cam, 26... Vertical groove, 26... Diagonal groove, 27... Convex shaped portion, 28... Concave shaped portion. Name of agent: Patent attorney Toshio Nakao and one other person
Triangle 9 - Drive part 22 - One shaft 23 - Teeth 24 - 22 - FR wheel 23 A, 230, 23 Har - 16 2 total - Turn shaped part 25 - Hole groove. Figure 3 26
4,260.26 Har Ponto Groove 5 Figure 4

Claims (2)

[Claims] (1) A triangular prism with letters or pictures drawn on its surface, a gear coaxial with the rotational axis of the triangular prism and having a plurality of teeth on the outside, and a drive shaft perpendicular to the rotational axis of the triangular prism. a cam, a longitudinal groove provided on the cam so that the gear does not rotate even if the cam rotates when the cam engages with the teeth; The cam has an oblique groove provided in the cam so as to rotate the gear, and a driving part that rotates the cam, and by arranging a plurality of the triangular prisms in parallel and rotating each of the triangular prisms, the plurality of triangular prisms can be rotated. An advertising display device characterized by being able to change displayed characters and pictures. (2) A convex portion is provided at one end of the cam facing each of the triangular prisms, a concave portion that can be freely fitted with the convex portion is provided at the other end, and the convex portion and the concave portion are provided at the other end. The advertisement display device according to claim 1, wherein the shaped portion is fitted and connected.