JP3565451B2 - Digital display - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital display that displays numbers, symbols, and the like by selectively emitting light from a plurality of light-emitting diodes (LEDs).
[0002]
[Prior art]
Conventionally, LED digital displays have been widely used as various types of display devices. Generally, as shown in FIG. 5, one LED chip 12 is mounted on an insulating substrate 11 for each display segment 15. A reflector 14 having a light lead-out hole 13 is mounted on the insulating substrate 11, and a diffusion sheet 16 on which a display segment 15 for transmitting the light of the LED chip 12 while scattering the light is formed. Many are worn. In recent years, from the viewpoint of cost reduction, even if the number of display digits differs according to the product specifications, some parts of the product can be shared by adopting a specification in which a digital display having the same external dimensions is assembled. There are times when you do.
[0003]
[Problems to be solved by the invention]
By the way, when the number of display digits of the digital display is changed, (1) the number and position of the LED chips 12 mounted on the insulating substrate 11; and (2) the number and position of the light guide holes 13 of the reflector 14. (3) The number and position of the display segments 15 on the diffusion sheet 16 need to be changed. Therefore, the number of components that can be shared is extremely small, and the cost reduction width is small. In particular, since the reflection plate 14 is made of a plastic molded product, it is necessary to change a molding die having a high production cost in accordance with the change in the number of display digits. There was a drawback that inventory management was troublesome.
[0004]
The present invention has been made in view of such circumstances, and accordingly, the object is to be able to use a common reflector for different numbers of display digits, thereby satisfying the demand for cost reduction and at the same time. Another object of the present invention is to provide a digital display capable of facilitating inventory management of a reflection plate.
[0005]
[Means for Solving the Problems]
To achieve the above object, claim 1 of the present invention provides:
An insulating substrate on which a plurality of light emitters are mounted,
A reflector mounted on the insulating substrate and having a plurality of light output holes for guiding light emitted from the plurality of light emitters,
A diffusion sheet, which is mounted on the reflection plate and has a plurality of display segments formed to transmit light while scattering light passing through the plurality of light output holes,
In a digital display device for displaying numbers, symbols, and the like in the plurality of display segments by selectively emitting the plurality of light emitters,
By forming the light guiding holes of the reflector at all positions facing the display segments of a plurality of types of diffusion sheets having the same external dimensions and different numbers of display digits, the reflection plate is provided for different numbers of display digits. Is common.
[0006]
According to this configuration, the light guide holes of the reflection plate are formed at all positions facing the display segments of the plurality of types of diffusion sheets having different numbers of display digits. In any case, the display segments of all the diffusion sheets are in a state of facing one of the light guide holes of the reflection plate. At this time, the light guide hole that does not face the display segment is closed by the light blocking portion (portion that does not transmit light) of the diffusion sheet, and is not exposed to the outside. This makes it possible to use a common reflector for different numbers of display digits.
[0007]
In a case where the present invention is applied to a 7-segment digital display, when a diffusion sheet for displaying N digits (where N is a plurality) is mounted as described above, N When there is a light guide hole which is not used in the digit display, there are three places at the top, middle, and bottom, and when the diffusion sheet which performs the N-1 digit display is attached, the light guide hole which is not used in the N digit display and the left and right sides thereof. It is preferable to perform a configuration in which N-digit 7-segment display is performed in combination with a light guide hole adjacent to.
[0008]
In this configuration, when the display is changed from N-digit display to N-1 digit display, the display position of each digit is shifted toward the center of the display by a half-digit pitch. Thus, the display position can be aligned with the center of the display in both the N-digit display and the N-1 digit display.
[0009]
Further, when the digital display of the present invention is attached to the front cover of the ball passing device of the pachinko machine, an engaging portion is formed on the reflection plate, and the front surface of the winning device or the ball passing device of the pachinko machine. The digital display may be assembled to the front cover by engaging the engaging portion with the engaged portion formed on the cover. As a result, the digital display can be assembled to the front cover of the winning device or the ball passing device by an extremely simple operation of engaging.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. First, the configuration of the digital display 21 will be described. A film substrate (flexible wiring substrate) is used as the insulating substrate 22, and a plurality of LED chips 23 (light emitters) are mounted at predetermined positions on the film substrate 22. In the case of a one-digit seven-segment display [FIG. 1 (a)], a total of seven LED chips 23 are mounted, and in the case of a two-digit seven-segment display [FIG. LED chip 23 is mounted.
[0011]
On the other hand, the reflecting plate 24 is formed by integral molding of plastic, and an engaging portion 25 is integrally formed on the upper side thereof. The reflector 24 has a plurality of light output holes 26a and 26b for guiding light emitted from the LED chip 23. In this case, the total number of the light guide holes 26a and 26b is set to 17 (= 7 + 3 + 7) so that the reflector 24 of the same size can be used in both the one-digit display and the two-digit display. I have. In other words, in addition to the 7 + 7 light guide holes 26a used in the case of the two-digit display, light guide holes 26b not used in the two-digit display are formed at three places in the middle of the two-digit display position. In the case of the one-digit display, a three-digit light-segment hole 26b not used in the two-digit display is combined with 2 + 2 light-leading holes 26a adjacent to the left and right sides thereof, thereby forming a one-digit seven-segment display. It is supposed to do.
[0012]
The reflecting plate 24 also functions as a mounting base for the film substrate 22, and as shown in FIG. 3, mounting protrusions 27 integrally formed on a plurality of locations on the back surface of the reflecting plate 24, each of which is formed on the film substrate 22. In a state where the mounting holes 28 are fitted, the film substrate 22 is fixed to the back surface of the reflection plate 24 by crimping the tip of each mounting projection 27 so as to be caulked. 26a or 26b.
[0013]
On the other hand, a diffusion sheet 29 is adhered to the surface of the reflection plate 24. As shown in FIGS. 1 and 2, there are two types of diffusion sheet 29, one-digit display and two-digit display, both of which have the same outer dimensions. Seven display segments 30 are formed on the diffusion sheet 29 for one-digit display, and 7 + 7 display segments 30 are formed on the diffusion sheet 29 for two-digit display. Each display segment 30 faces the light outlet hole 26a or 26b where the LED chip 23 exists, and transmits the light of the LED chip 23 while scattering the light. The portion of the diffusion sheet 29 other than the display segment 30 is a light-shielding portion that does not transmit light, and the light-shielding portion closes the light guide hole 26a or 26b where the LED chip 23 does not exist.
[0014]
The digital display 21 configured as described above is mounted on a front cover 32 of an electric tulip 31 which is a winning device of a pachinko machine, as shown in FIG. An opening 33 for fitting the digital display 21 is formed in the front cover 32 of the electric tulip 31. The upper edge of the opening 33 is covered with the engaging portion 25 of the digital display 21. An engagement portion 34 is formed, and the digital display 21 is assembled to the front cover 32 by the engagement between the engagement portion 25 and the engaged portion 34.
[0015]
According to the above-described embodiment, in addition to the 7 + 7 light guide holes 26a used in the case of two-digit display, the light guide holes 26b not used in the two-digit display are provided in the reflector 24 in the middle of the two-digit display position. Are formed at three places in the upper, middle, and lower positions, and in the case of one-digit display, three light lead-out holes 26b not used in two-digit display, and 2 + 2 light lead-out holes 26a adjacent to both right and left sides thereof Can be used to perform one-digit seven-segment display, and the reflector 24 can be shared between the one-digit display and the two-digit display, and the molding cost of the reflector 24 is significantly higher than in the past. And the cost reduction can be satisfied, and the inventory management of the reflection plate 24 can be facilitated. Moreover, by forming the light outlet holes 26b, which are not used in the two-digit display, at three places in the middle of the two-digit display position, a one-digit seven-segment display can be performed in the middle of the two-digit display position. In either case of the one-digit display and the two-digit display, the display position can be aligned with the center of the digital display 21 and the display can be improved.
[0016]
In the above embodiment, the reflector 24 is shared between the two-digit display and the one-digit display. However, the reflection is performed between the three-digit display, the two-digit display, and the four-digit display and the three-digit display. The plate may be shared. In short, when the reflector is shared between the N-digit display and the N-1 digit display (where N is a plurality), a diffusion sheet that performs the N-digit display is used. When installed, there are three light guide holes between the respective digit display sections, which are not used in the N-digit display, in the upper, middle, and lower positions. The N-digit 7-segment display may be performed by combining the light guide holes not used in the display and the light guide holes adjacent to the left and right sides thereof. With this configuration, when the display is changed from the N-digit display to the N-1 digit display, the display position of each digit is shifted to the center side of the display by a half-digit pitch, and either the N-digit display or the N-1 digit display is performed. Even in this case, the display position can be aligned with the center of the display.
[0017]
In the case of three digits or more, the reflector can be shared for three or more types of different display digits of N digits, N-1 digits, N-2 digits,. is there. For example, when the maximum number of digits that can be changed is three-digit display, when changing to two-digit display, the display position of each digit is shifted from the three-digit display position to the center of the display by a half-digit pitch, and When the display is changed to the one-digit display, only the display of the intermediate digits in the case of the three-digit display may be used.
[0018]
When the digital display 21 is attached to the front cover 32 of the electric tulip 31, in the above-described embodiment, the engaging portion 25 is formed on the reflection plate 24, and the engaging portion 25 is formed on the front cover 32 of the electric tulip 31. Since the digital display 21 is assembled to the front cover 32 by engaging with the part 34, the assembly of the digital display 21 to the front cover 32 can be performed by an extremely simple operation of engagement. The assembling efficiency of the pachinko machine can also be improved. However, in the present invention, the mounting structure of the digital display 21 may be appropriately changed to screwing or the like, and even in this case, the intended object of the present invention can be sufficiently achieved.
[0019]
In addition, the digital display of the present invention may be attached to a front cover of a ball passing device in addition to a winning device such as an electric tulip of a pachinko machine, and of course, a game machine other than a pachinko machine or a general electric / electronic device. May be used as a digital display. Further, an ordinary resin insulating substrate may be used in place of the film substrate 22, and it goes without saying that the mounting structure of the insulating substrate, the reflection plate and the diffusion sheet can be variously modified.
[0020]
【The invention's effect】
As is apparent from the above description, according to the first aspect of the present invention, the light guide holes of the reflection plate are formed at all positions facing the display segments of a plurality of types of diffusion sheets having different numbers of display digits. Therefore, it is possible to use a common reflector for different numbers of display digits, thereby satisfying the demand for cost reduction and simplifying inventory management of the reflector.
[0021]
Moreover, when a diffusion sheet for displaying N digits (where N is a plurality) is attached as in claim 2, there are three light outlet holes, not used in the N digit display, between each digit display portion. When a diffusion sheet for displaying N-1 digits is attached, a light guiding hole not used in the N digit display and light guiding holes adjacent to the left and right sides thereof are combined to form an N-1 digit. Since 7-segment display is used, when changing from N-digit display to N-1 digit display, the display position of each digit can be shifted toward the center of the display by half-digit pitch, and N-digit display In either case of N and N-1 digit display, the display position can be aligned with the center of the display, and the appearance of the display can be improved.
[0022]
According to the third aspect of the present invention, the digital display is provided on the front cover by engaging the engaging portion formed on the reflection plate with the engaged portion formed on the front cover of the winning device or the ball passing device of the pachinko machine. Since the assembling is performed, the assembling of the digital display to the front cover can be performed by an extremely simple operation of engagement, and the assembling efficiency of the pachinko machine can be improved.
[Brief description of the drawings]
FIGS. 1A and 1B show an embodiment of the present invention, in which FIG. 1A is an exploded perspective view of a digital display in the case of single digit display, and FIG. 1B is an exploded perspective view of a digital display in the case of double digit display. It is.
2A is a front view of a reflection plate, FIG. 2B is a front view of a single-digit display diffusion sheet, and FIG. 2C is a front view of a two-digit display diffusion sheet.
FIG. 3 is a partially enlarged vertical sectional side view of the digital display.
FIG. 4 is a front view of the electric tulip.
FIG. 5A is a plan view of a display unit of a conventional digital display, and FIG. 5B is a cross-sectional view taken along line AA of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 21 ... Digital display, 22 ... Film board (insulating board), 23 ... LED chip (light emitting body), 24 ... Reflector, 25 ... Engaging part, 26a and 26b ... Light lead-out hole, 27 ... Mounting protrusion, 28 ... Attachment holes, 29: diffusion sheet, 30: display segment, 31: electric tulip (winning device), 32: front cover, 33: opening, 34: engaged part.

Claims (3)

An insulating substrate on which a plurality of light emitters are mounted,
A reflector mounted on the insulating substrate and having a plurality of light output holes for guiding light emitted from the plurality of light emitters,
A diffusion sheet, which is mounted on the reflection plate and has a plurality of display segments formed to transmit light while scattering light passing through the plurality of light output holes,
In a digital display device for displaying numbers, symbols, and the like in the plurality of display segments by selectively emitting the plurality of light emitters,
By forming the light guiding holes of the reflector at all positions facing the display segments of a plurality of types of diffusion sheets having the same external dimensions and different numbers of display digits, the reflection plate is provided for different numbers of display digits. Digital display characterized by the common use of: A digital display for performing a 7-segment digital display,
When a diffusion sheet that performs N-digit display (where N is a plurality) is attached, there are three light guide holes, which are not used in the N-digit display, between upper, middle, and lower positions between the respective digit display units.
When a diffusion sheet for displaying N-1 digits is attached, a light-guiding hole not used in the N-digit display and light-guiding holes adjacent to the left and right sides thereof are combined to display an N-1 digit 7-segment display. The digital display according to claim 1, wherein the digital display is configured to perform the operation. An engaging portion is formed on the reflection plate, and the engaging portion is engaged with an engaged portion formed on a front cover of a winning device of a pachinko machine or a ball passing device, thereby being assembled to the front cover. The digital display according to claim 1 or 2, wherein:

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