JPH1043383A - Image display device for pachinko - Google Patents

Abstract

(57) [Summary] To enlarge a display area, a device using a CRT has a problem that the depth of the device becomes large, and a device using a liquid crystal display panel causes a significant cost increase. SOLUTION: The pachinko machine includes a game board 10 in which a large number of nails are planted, and an opening 12 on a front surface is covered with a glass plate 12a. Pachinko balls pass through the space between the game board 10 and the glass plate 12a. A display device is provided at the center of the game board 10. The display light from the liquid crystal display panel 31a illuminated by the backlight 31b is
The light is projected onto the screens 40 and 41 from the rear side via a projection optical system including a projection lens 34a and a mirror 33a.
The liquid crystal display panel 31a is arranged on the back side of the game board 10. The screens 40, 41, and 42 are transmissive screens disposed closer to the player than the game board 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pachinko image display apparatus for displaying variable image information on a game board of a pachinko machine.

[0002]

2. Description of the Related Art Conventionally, a pachinko machine is provided with a display device including an image display element such as a CRT display or a liquid crystal display panel for displaying variable image information in a central area of a game board. The display devices include those that display image information such as numbers and marks related to the game of the pachinko machine, and those that display image information such as video images and television broadcasts that are not related to the pachinko machine.

The conventional image display device for pachinko machines is a so-called direct-view type display device in which the display screen of the image display element is directly viewed. It is necessary to use a large element as the element.

[0004]

However, the CRT
A pachinko image display device using a display has a relatively large depth in a direction perpendicular to the screen as compared with the size of the display screen, and a large CR to enlarge the display screen.
When T is used, there is a problem that the depth of the display device is increased.

On the other hand, in an image display device for a pachinko machine using a liquid crystal display panel, the depth of the device does not increase so much even if a large display device is used, but the price of the liquid crystal display device increases according to the size of the screen. Therefore, there is a problem that using a large-sized liquid crystal display panel causes a significant increase in cost of the display device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and it is possible to display an image on a large display screen without increasing the depth of the apparatus and suppressing a significant increase in cost. It is an object of the present invention to provide a pachinko image display device that can be used.

[0007]

In order to achieve the above object, a pachinko image display apparatus according to the present invention achieves the above object by displaying display light from a liquid crystal display panel illuminated by a backlight onto a screen via a projection optical system. In a pachinko image display device for projecting and displaying an image on at least a part of a game board, a liquid crystal display panel is disposed on a back surface of the game board when viewed from a player side, and a screen is provided by the player The projection optical system projects display light from the rear side of the screen and substantially conjugates the liquid crystal display panel with the screen.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pachinko machine according to the present invention will be described below.

FIGS. 1A, 1B and 1C show an application example of a first embodiment of a pachinko image display apparatus according to the present invention. The pachinko machine includes a game board 10 in which a number of nails (not shown) are planted, and an opening 12 on the front surface is covered with a glass plate 12a which is a transparent plate. Pachinko balls, game board 1
0 and the space between the glass plate 12a. Gaming board 1
In the center of 0, a display device for displaying variable image information such as numbers and marks related to the game of the pachinko machine is provided. In the first embodiment, display light from the liquid crystal display panel 31a illuminated by the backlight 31b is projected from the rear side onto the screens 40 and 41 via a projection optical system including a projection lens 34a and a mirror 33a. .

The liquid crystal display panel 31a has a glass plate 12a.
It is arranged on the back side of the game board 10 when viewed from the player sitting on the side. The screens 40, 41, and 42 are transmissive screens disposed closer to the player than the game board 10.

In the first example shown in FIG. 1A, the screen 40 is a glass plate 12a that covers the front of the game board 10.
And the game board 10. In the second example shown in FIG. 1B, the screen 41 is arranged on the inner side of the glass plate 12a that covers the front of the game board 10. In the example of FIGS. 1A and 1B, the projection lens 34
0, 41 and the liquid crystal display panel 31a are substantially conjugated. The screen 4 used in the example of FIG.
For 1, a translucent material is used so that a pachinko ball passing behind can be seen.

In the third example shown in FIG. 1C, the first screen 42 is arranged substantially flush with the board surface of the game board 10 and behind the game board 10, and the front face of the game board 10 is The second screen 41 is arranged on the glass plate 12a to be covered. The first screen 42 is made of a material that transmits light so that the light transmitted therethrough reaches the second screen 41. The second screen 41 is translucent so that a pachinko ball passing behind can be seen. Materials are used.

By moving at least a part of the projection lens 34a in the optical axis direction, one of the first and second screens 42 and 41 and the liquid crystal display panel 31a are conjugated. When the liquid crystal display panel 31a is conjugate with the first screen 42, that is, the first screen 42
When the display light is focused on the second screen 4
1, the image projected on the first screen 42 becomes identifiable. In this case, since the display light is not focused on the second screen 41, no image is recognized on the second screen. When the display light is focused on the second screen 41, the second screen 41
The image projected above becomes identifiable. In this case,
Since the display light is not focused on the first screen 42, no image is recognized on the first screen 42.
If the second screen 41 is a white liquid crystal plate whose transmittance changes depending on the amount of electricity, it can be switched between white (opaque), translucent, and transparent depending on the amount of electricity, and the display on the first screen is shut off. , Half transmission, or full transmission, the appearance of the image projected on the two screens can be changed.

FIGS. 2A to 2E show an application example of the second embodiment of the pachinko image display apparatus according to the present invention.
In the second embodiment, a liquid crystal display panel 31 arranged on the back of the game board 10 and illuminated by a backlight 31b
The display light from a is projected from the front side, that is, from the player side to the reflection type screens 43 to 46 via the projection optical system including the projection lens 34b (34c) and the two mirrors 33a, 33b (33c). Is done.

In the first example shown in FIG. 2A, the screen 43 is substantially flush with the board of the game board 10 and is arranged behind the game board 10. Liquid crystal display panel 31a
The display light transmitted through the projection lens 34b is deflected to the front side by the first mirror 33a, transmitted through a window (not shown) provided at the upper part of the game board 10, and The light is reflected to the game board side by the second mirror 33b arranged on the upper side and reaches the reflection type screen 43. The display light reaches the screen through the space between the game board 10 and the glass plate 12a, and the player
, A display image on the screen 43 can be viewed.

In the second example shown in FIG. 2B, the screen 44 is arranged so as to be flush with the surface of the game board 10. In the third example shown in FIG. The screen 45 is located between the game board 10 and the glass plate 12a and at a position protruding from the game board 10 toward the player. The optical path of the display light is the same as in the first example shown in FIG.

In the fourth example shown in FIG. 2D, the screen 46 is disposed on the inner side of the glass plate 12a that covers the front of the game board 10. The screen 46 is made of a translucent material so that pachinko balls passing behind can be seen. The display light reflected by the second mirror 33b is
The light is once injected outside the pachinko machine and reaches the screen 46 from the outside through the glass plate 12a.

In the fifth example shown in FIG. 2 (E), the first screen 43 is substantially flush with the board surface of the game board 10 and is arranged behind the game board 10, and the front face of the game board 10 is The second screen 46 is arranged on the glass plate 12a to be covered. The first screen 43 is made of a material that transmits light so that light transmitted through the first screen 43 reaches the second screen 46. The second screen 46 is translucent so that a pachinko ball passing behind can be seen. The material is used.

The second mirror 33c is rotatable around a coaxial axis perpendicular to the plane of the drawing, and changes the projection direction of the display light toward one of the first and second screens 43 and 46. Let it. The first and second projection lenses 34c are moved by moving at least a part thereof in the optical axis direction.
Screen 43, 46 and liquid crystal display panel 31
a is conjugated. The rotation of the second mirror 33c and the movement of the projection lens 34c are both linked to the switching of the screen to be displayed.

When the display light is directed to the first screen 43, the image projected on the first screen 43 through the second screen 46 can be identified.
In this case, since the display light does not reach the second screen 46, no image is recognized on the second screen. When the display light is directed to the second screen 46, the image projected on the second screen 46 can be identified. In this case, since the display light does not reach the first screen 43, no image is recognized on the first screen 43. In the example of FIG. 2E as well, the second screen 46 can be a white liquid crystal plate whose transmittance changes depending on the amount of electricity, as in the case of FIG. 1C.

FIG. 3 shows an application example of the third embodiment of the pachinko image display apparatus according to the present invention. In the third embodiment, the game board 10 is almost flush with the board and the game board 1
A transmissive screen 47 arranged on the back side from 0;
Reflective screen 46 arranged on glass plate 12a
, So that an image can be displayed on both screens at the same time. The reflective screen 46 is made of a translucent material so that pachinko balls passing behind can be seen.

In the first example shown in FIG. 3A, a transmission type display device shown in FIG. 1A and a reflection type display device shown in FIG. It is a configuration built into the machine. That is, the display device of FIG. 3A is disposed on the back of the game board 10 and is illuminated by the backlights 31b and 32b, respectively, of the first and second liquid crystal display panels 31a and 31b.
2a and a projection optical system for projecting display light from these liquid crystal display panels onto screens 47 and 46, respectively.

The display light from the first liquid crystal display panel 31a is projected on a transmission type screen 47 via the projection lens 34 and the first mirror 33a, and the display light from the second liquid crystal display panel 32a is The light is projected from the front side onto a reflection type screen 46 via the projection lens 35 and the second mirror 33b.

Since images are displayed on the screens 47 and 46 by display light from the two liquid crystal display panels 31a and 32a which can be controlled independently, either one of them or both of them are overlapped. Various displays are possible by displaying the images. For example, by displaying a distant view on the transmissive screen 47 and displaying a near view on the reflective screen 46, it is possible to display an image having a perspective. Also in the example of FIG. 3A, the second screen 46 can be a white liquid crystal plate whose transmittance changes depending on the amount of electricity, as in the case of FIG. 1C.

In the second example shown in FIG. 3B, display light emitted from a single liquid crystal display panel 31a and transmitted through a projection lens 34d is split into two by a half mirror 33d. The component reflected by the half mirror 33d is projected on a transmission type screen 47. The component transmitted through the half mirror 33d is deflected to the front side by the first mirror 33a, passes through a window (not shown) provided at the upper part of the game board 10, and passes through the projection lens 34e to the glass plate 12a. The light is reflected to the game board side by the second mirror 33b disposed on the upper side and is projected on the reflection type screen 46.

By employing a projection type system as shown in FIGS. 1 to 3 instead of a conventional direct view type as a display device, the display screen of the liquid crystal display panel 31a can be enlarged and projected. Even when a small and inexpensive liquid crystal display panel is used, a wide display area can be secured, and an increase in the cost of the display device can be avoided.
In any of the embodiments, by using a zoom lens as the projection lens, the magnification of the projected image can be changed optically.

[0027]

As described above, according to the present invention, an image on a liquid crystal display panel is projected onto a screen and displayed, so that an image can be displayed on a wide display area using a small liquid crystal display panel. Display can be performed, and costs can be reduced as compared with a case where a large display area is secured using a large liquid crystal panel.

[Brief description of the drawings]

FIG. 1 is a side view of a pachinko machine provided with a pachinko image display device according to a first embodiment of the present invention.

FIG. 2 is a side view of a pachinko machine provided with a pachinko image display device according to a second embodiment of the present invention.

FIG. 3 is a side view of a pachinko machine provided with a pachinko image display device according to a third embodiment of the present invention.

[Explanation of symbols]

 10 Game board 31a, 32a Liquid crystal display panel 31b, 32b Backlight 33a, 33b, 33c Mirror 33d Half mirror 40-47 Screen

Claims (11)

[Claims] 1. A pachinko image display device that projects display light from a liquid crystal display panel illuminated by a backlight onto a screen via a projection optical system and displays an image on at least a part of a game board. The liquid crystal display panel is disposed on the back of the game board as viewed from the player side, the screen is a transmission type screen disposed on the player side of the game board, and the projection optical system, An image display device for a pachinko machine, wherein display light is projected from a back side of a screen, and the liquid crystal display panel and the screen are substantially conjugated. 2. The pachinko image display device according to claim 1, wherein the screen is disposed between a transparent plate covering a front surface of the game board and the game board. 3. The image display device for a pachinko machine according to claim 1, wherein the screen is disposed on a transparent plate covering a front surface of the game board. 4. A projection optical system, comprising: a first screen arranged substantially flush with a board surface of the game board; and a second screen arranged on a transparent plate covering a front surface of the game board. The pachinko image display apparatus according to claim 1, wherein the liquid crystal display panel is conjugated to one of the first and second screens by moving a part thereof in an optical axis direction. . 5. A pachinko image display device for projecting display light from a liquid crystal display panel illuminated by a backlight onto a screen via a projection optical system and displaying an image on at least a part of a game board, The liquid crystal display panel is disposed on the back of the game board as viewed from a player side, the screen is a reflection type screen, and the projection optical system uses at least two mirrors to form the liquid crystal display panel. An image display device for a pachinko machine, wherein display light from the projector is projected onto the screen from the front side, and the liquid crystal display panel and the screen are substantially conjugated. 6. The pachinko image display device according to claim 5, wherein the screen is arranged substantially flush with a board surface of the game board. 7. The image display device for a pachinko machine according to claim 5, wherein the screen is disposed between a transparent plate covering a front surface of the game board and the game board. 8. The image display device for a pachinko machine according to claim 5, wherein said screen is arranged on a transparent plate covering a front surface of said game board. 9. A projection optical system, comprising: a first screen disposed substantially flush with a board surface of the game board; and a second screen disposed on a transparent plate covering a front surface of the game board. By changing the angle of at least one of the mirrors to change the projection direction toward one of the first and second screens, and moving at least some of the optical elements in the optical axis direction. The image display device for a pachinko machine according to claim 5, wherein one of the first and second screens and the liquid crystal display panel are conjugated. 10. A pachinko image display device for projecting display light from a liquid crystal display panel illuminated by a backlight onto a screen via a projection optical system and displaying an image on at least a part of a game board, A transmission screen disposed substantially flush with the board surface of the game board, and a reflective screen disposed on a transparent plate covering the front face of the game board, wherein the liquid crystal display panel is The projection optical system is arranged on the rear surface of the game board as viewed from above, and the projection optical system projects a part of the display light from the liquid crystal display panel from the rear surface to the transmissive screen by branching the display light, and the remaining part is An image for pachinko, wherein the image is projected from the front side to a reflection type screen, and the projection optical system makes the liquid crystal display panel and each of the screens substantially conjugate. Display devices. 11. A pachinko image display device for projecting display light from a liquid crystal display panel illuminated by a backlight onto a screen via a projection optical system and displaying an image on at least a part of a game board, The first, located on the back of the game board as viewed from the player side,
A second liquid crystal display panel, a transmissive screen disposed substantially flush with a board surface of the game board, a reflective screen disposed on a transparent plate covering a front surface of the game board, A first projection optical system for projecting display light from the liquid crystal display panel onto the transmission type screen, and a display light from the second liquid crystal display panel using the mirror on the reflection type screen from the front side. An image display device for a pachinko machine, comprising: a second projection optical system for projecting.