JPH10328357A - Decoration lamp for game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To yield a useful effect of reducing cost by a method the positive and negative positions are switched in a pair of power source lines led out from a control circuit and light emitting diodes in two systems are freely flashed alternately in a pair on a one to one basis to simplify a wiring processing with a reduced number of wires. SOLUTION: N1 and N2 are a pair of NANDS with inputs thereof connected to the others' outputs and the output sides thereof are respectively connected to the bases of transistors Q5 and Q6. As a result, when the output of the NAND N1 is at a high level and the output of the NAND N2 is at a low level, the transistors Q1 and Q4 are turned ON and the transistors Q2 and Q3 turned OFF so that a forward voltage is applied to one light emitting diode L2 to light while a reverse voltage is applied to the other light emitting diode L1, which does not light. When the outputs of the NANDs N1 and N2 are each at a high or low level, the transistors Q1 and Q4 are turned OFF and those Q2 and Q3 are turned ON so that a forward voltage is applied to the light emitting diode L1 to light while a reverse voltage is applied to that L2, which does not light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit for blinking a plurality of illumination lamps provided on a game machine such as a pachinko game machine.

[0002]

2. Description of the Related Art As is well known, in a pachinko game machine, a large number of illuminated lamps are provided on the front of a game board or the front of a front frame or the like. The status is displayed. Lighting diodes (LEDs) have been widely used as light sources from the viewpoints of power saving, heat generation prevention, and long life, etc., as electric lamps for pachinko gaming machines.

In the case where a plurality of light emitting diodes are turned on and off as two systems, an electric circuit as shown in FIG. 5 has conventionally been assembled. In the figure, Q10, Q20
Is a transistor provided on the control circuit board 1 for controlling the game mode, V10 is a DC plus power supply for operating the control circuit board 1, L10 and L20 are light-emitting diodes provided on the illuminated wiring board 2, and the light-emitting diodes L10, L20
Has an anode connected to a power supply line Y10 via limiting resistors R10 and R20, respectively, and the power supply line Y10 connected to a DC power supply V10, and a cathode connected to power supply lines Y20 and Y30, respectively. The power supply lines Y20, Y30 are connected to the emitters of the transistors Q10, Q20, and the signals of the control circuit board 1 are applied to the bases of the transistors Q10, Q20, so that the light emitting diodes L10,
L20 can be alternately turned on and off.

[0004]

As described above, in a conventional circuit for blinking a decorative lamp of a game machine, at least three power supply lines Y10 are used for alternately blinking a plurality of light emitting diodes even if there are two systems. , Y20, Y30
From the control circuit board 1 to the illuminated wiring board 2. For this reason, there has been a problem that wiring processing for connecting the control circuit board 1 and the illuminated wiring board 2 becomes complicated.

[0005]

SUMMARY OF THE INVENTION A decorative lamp in a gaming machine according to the present invention is intended to solve the above-mentioned problem, and a pair of power lines which can be switched between positive and negative are led out from a control circuit board and connected to the power line. It is characterized in that two light-emitting diodes are used as a set of units on the illuminated wiring board and the light-emitting diodes are connected in parallel so that their polarities are opposite to each other.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIG. In the figure, 1 is a control circuit board, 2 is an illuminated wiring board, L1 and L2 are light emitting diodes provided on the illuminated wiring board 2, and R1 and R2 are limiting resistors of the light emitting diodes L1 and L2. . The light emitting diode L1 and the light emitting diode L2 are connected in parallel with their polarities (anode side and cathode side) opposite to each other and connected to a pair of power supply lines Y1 and Y2, respectively.

On the illuminated wiring board 2, there is provided a current switching circuit including PNP transistors Q1, Q3, NPN transistors Q2, Q4, and NPN transistors Q5, Q6 for driving the transistors Q1, Q3. And the collector of transistor Q1 and transistor Q
The power supply line Y1 is connected to the connection point of the collector of the transistor Q3 and the power supply line Y2 is connected to the connection point of the collector of the transistor Q3 and the collector of the transistor Q4.
1 (+12 V), the emitters of the transistors Q2 and Q4 are grounded,
And the base of transistor Q3 is
5 and the collector of the transistor Q6 have resistors R6 and R6, respectively.
R7, the collectors of the transistors Q5 and Q6 are connected to the positive power supply V1 via the resistors R3 and R4, the emitters of the transistors Q5 and Q6 are grounded, and the base of the transistor Q2 is connected to the resistor R5. The base of the transistor Q4 is connected to the base of the transistor Q5 via a resistor R8.

N1 and N2 are a pair of NANDs connecting the input and the output of each other.
It is connected to the base of Q6. Therefore, when the output of the NAND N1 is at a high level and the output of the NAND N2 is at a low level, the transistors Q1 and Q4 are turned on, and the transistor Q1 is turned on.
2 and Q3 are turned off, and one of the light emitting diodes L2 is turned on by applying a forward voltage, and the other light emitting diode L1 is not turned on because a reverse voltage is applied to the other light emitting diode L1. When the output of the NAND N1 goes low and the output of the NAND N2 goes high, the transistors Q1 and Q4 are turned off and the transistors Q2 and Q3 are turned on, so that a forward voltage is applied to the light emitting diode L1. The light emitting diode L2 does not light because a reverse voltage is applied to the light emitting diode L2. When the outputs of both the NANDs N1 and N2 are at the low level, both the light emitting diodes L1 and L2 do not light up.

The outputs of the NANDs N1 and N2 are provided in order to prevent the output from being at the high level at the same time and turning on the transistors Q1 and Q2 or the transistors Q3 and Q4 at the same time, causing an overcurrent to flow and destroying. Incidentally, Table 1 shows the input terminal S1 of the NAND N1 and the input terminal S of the NAND N2.
2 (H or L) and the light emitting diodes L1 and L2
Is shown as a truth table.

[Table 1] As shown in FIGS. 2 and 3, the light emitting diode L
A larger number of 1, L2 can be provided on the illuminated wiring board 2 as necessary, and when an illuminated effect is required over the entire decorative area, the number of L2 can be increased in series as shown in FIG. Needless to say, this can be achieved by providing a large number. This blinking circuit can be applied not only to pachinko gaming machines but also to decorative lamps in slot machines and other gaming machines.

[0010]

As described above, according to the decorative lamp of the present invention, two light emitting diodes of two systems are alternately used as a set of units by switching the polarity of a pair of power supply lines derived from the control circuit board. In addition to being able to blink freely, the required number of wires is reduced, which has a beneficial effect of simplifying the wiring process and reducing the cost.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a decorative lamp in a gaming machine according to the present invention.

FIG. 2 is a circuit diagram showing another embodiment of the main part of FIG. 1;

FIG. 3 is a circuit diagram showing another embodiment of the main part of FIG. 1;

FIG. 4 is a circuit diagram showing another embodiment of the main part of FIG. 1;

FIG. 5 is a circuit diagram of a conventional decorative lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control circuit board 2 Illuminated wiring board Y1, Y2 Power supply line L1, L2 Light emitting diode

Claims (1)

[Claims] 1. A pair of power lines, which are switched between positive and negative, are derived from a control circuit board, and two light emitting diodes are set as a set on an illuminated wiring board connected to the power line.
A decorative lamp in a game machine, wherein the light emitting diodes are connected in parallel so that the polarities of the light emitting diodes are opposite to each other.