JP2662240B2 - Signal light control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates at least to a stop indicating indicator (red light; hereinafter referred to as R light) and a progress indicating indicator (green light; hereinafter G).
Called a lamp. A) a signal light control device for controlling the lighting and extinguishing of the R light, wherein the power supply and the R light are directly connected to each other without including the circuit opening / closing means to constitute an R light lighting circuit; R to turn off the lamp by giving the R lamp lighting circuit energy to cancel the electrical energy supplied from the power supply
By configuring the lamp extinguishing circuit, R
The non-lighting of the light is eliminated, and the R light is reliably turned on when necessary, so that the train can be stopped.

<Conventional technology> The signal light control conditions for railway signals and the like are that the R light can be always turned on, the R light is turned off when the G light is turned on, and the R light is turned on when the G light lighting circuit fails. Is required. Among these lighting conditions, the concept of fail-safe is particularly important for the lighting of the R lamp. FIG. 3 is a circuit diagram of a conventional signal light control device. In the figure, 1 is a power supply, 2 is a transformer, 3 is a G light for indicating progress indication, 4 is an R light for indicating stop indication, 5 is a relay, 51 is an operating contact of the relay 5, and 52 is a recovery contact. It is.

As a means for satisfying the fail-safe property of the R lamp 4, conventionally, a fail-safe relay 5 designed to close to the recovery contact 52 required when a failure occurs is used, and the R lamp 4 is used.
In this case, the power is supplied through the recovery contact 52 of the relay 5 and the filament of the R lamp 4 is doubled so as not to be extinguished even in the case of a single break.

<Problems to be solved by the invention> However, in the conventional signal light control device, R
Since the lamp 4 is turned on through the recovery contact 52, if the recovery contact 52 causes a contact failure, the R lamp 4
There was a serious defect that lighting could not be performed.

<Means for Solving the Problems> In order to solve the above-described conventional problems, the signal light control device according to the first invention includes at least a signal light control device that turns on or off the R light and the G light. An R lamp lighting circuit for directly connecting a power supply and the R lamp without a circuit opening / closing means, an R lamp extinguishing circuit for interrupting a light beam from the R lamp and extinguishing the R lamp; And a G lamp lighting circuit for lighting the G lamp under a lamp condition.

The signal light control device according to the second invention has at least R
In a signal light control device for turning on or off a lamp and a G lamp, an R lamp lighting circuit for directly connecting a power supply and the R lamp without a circuit opening / closing means, and a power supply for the R lamp lighting circuit. An R lamp extinguishing circuit for extinguishing the R lamp by applying energy for canceling the electric energy supplied to the R lamp from a G lamp for lighting the G lamp on condition that the R lamp is extinguished. And a lamp lighting circuit.

<Operation> In the first invention, the R lamp is constituted by the R lamp lighting circuit that directly connects the power supply and the R lamp without including the circuit opening / closing means.
The light from the R light is cut off by the R light extinguishing circuit, so that the light is extinguished. Under the condition that the R lamp is extinguished, the G lamp lighting circuit
Turn on the light. Therefore, the R lamp can be turned on without being turned off due to a contact failure or the like when it should be turned on.
Also, since the G light is turned on under the condition that the R light is extinguished,
When the G light is on, the R light is always extinguished.

Next, in the second invention, the R lamp lighting circuit directly connects the power supply and the R lamp without including the circuit opening / closing means.
The lamp can be turned on without passing through a contact or the like. In the case of light extinguishing, from R light extinguishing circuit to R light lighting circuit,
The R lamp is extinguished by providing energy for canceling electrical energy supplied to the R lamp from a power supply. Then, on condition that the R lamp is extinguished, the G lamp is turned on by the G lamp lighting circuit. Therefore, also in the second invention, the R lamp can be turned on without fail. In addition, the condition of G
Since the lamp is turned on, the R lamp is always extinguished when the G lamp is turned on.

<Embodiment> FIG. 1 shows an embodiment of the first invention. In the figure,
The same reference numerals as those in FIG. 3 indicate identical components. The R lamp 4 does not include a circuit opening / closing means, and has a primary winding.
It is directly connected to both ends of the secondary winding 22 of the transformer 2 having the power supply 1 connected to the 21 side. Thereby, the power supply 1, the transformer 2
An R lamp lighting circuit is constituted by the power supply lines (a) and (b).

Reference numeral 6 denotes a shutter, 7 denotes a driving circuit such as a coil for driving the shutter 6, and 8 denotes a switch for turning on and off the driving circuit 7, and these constitute an R light extinguishing circuit. One end of the shutter 6 is rotatably fixed by a shaft 61 so that the light beam can be opened and closed on the front surface of the R lamp 4, and a stay 62 is attached to the other end. When the stay 62 is sucked by the solenoid attraction lamp of the coil constituting the drive circuit 7, the shutter 6 rotates around the shaft 61 to a position at which the light of the R lamp 4 is blocked, and the attraction to the stay 62 is reduced. If not, it will fall by its own weight. One end of a coil constituting the drive circuit 7 is connected to a power supply line (b),
The other end is connected to a power supply line (a) via a switch 8.

One end of the G lamp 3 is connected to a power supply line (b), and the other end is connected to a contact 9 that is in electrical contact with the stay 62 of the shutter 6. The shutter 6 is configured as an electrical conduction means, and one end thereof is connected to a power supply line (a). As a result, the components of the R extinguishing light circuit are shared, and R
A GT lamp lighting circuit that operates in the opposite direction to the lamp extinguishing circuit is configured.

When the switch 8 is off, the R lamp 4 turns on the power source 1,
The lamp is lit by the R lamp lighting circuit including the transformer 2 and the power supply lines (a) and (b). At this time, the driving circuit 7
Are non-excited, the shutter 6 is dropped by gravity, and the front surface of the R lamp is open. Therefore, the lighting of the R lamp 4 is displayed outside. The R lamp lighting circuit does not include lighting conditions such as contact points, and therefore, the R lamp 4
Can always be turned on when it should be turned on.

Next, when the switch 8 is turned on, the coil constituting the drive circuit 7 is excited, the stay 62 of the shutter 6 is attracted by the drive circuit 7, and the R lamp 4 Pivot to the front of the. This gives R
The light of the lamp 4 becomes invisible from the outside, and the lamp 4 goes out.

In the light extinguishing state, the stay 62 comes into contact with the contact 9, so that a G lamp lighting circuit is formed, and the G lamp 3 is turned on. Therefore, the signal light control condition of turning on the G light 4 when the R light 4 is extinguished can be satisfied.

If the coil breaks in the drive circuit 7, the shutter 6 falls by its own weight, the front surface of the R lamp 4 is opened, and the lamp 6 is turned on. The G light 3 is extinguished when the stay 62 is separated from the contact 9. Therefore, the signal lamp control condition that the R lamp 4 is turned on when the G lamp lighting circuit has failed can be satisfied.

FIG. 2 shows an embodiment of the second invention. The same reference numerals as in FIG. 1 indicate the same components, 10 is a Wheatstone bridge circuit, 11 is a switch, 12 is a current detection terminal,
13 is a current detection circuit, and 14 is a driver circuit for the G lamp 3.

The Wheatstone bridge circuit 10 includes a resistor R _{1 on} each side,
R _2, R _3, R ₄ placed, resistor R ₃ to the side that contains further a resistance R ₃
And a switch 11 is connected in series. The two ends of the secondary winding 22 of the transformer 2 are connected to diagonals (c) and (d), and the ends of the R lamp 4 are connected to the other diagonals (e) and (f). .

The switch 11 is a contact of the relay 5 driven by the lighting condition. The switch 11 is not limited to a contact point. State. Can be replaced by a relay.

The current detection terminal 12 is formed of, for example, a current transformer or the like, and is coupled to a current supply line (g) to the R lamp 4. When the current is detected by the current detection terminal 12, that is, when the R lamp 4 is lit, the current detection circuit 13 controls the driver circuit 14 so that the G lamp 3 is not lit. When the current value detected by the current detection terminal 12 is significantly smaller than the lighting current of the R lamp 4 or is zero, the current detection circuit 13 controls the driver circuit 14 to turn on the G lamp 3. Add. Reference numeral 15 denotes a contact point of the relay 5 driven according to a lighting condition. This contact 15 is also solid. State. Can be replaced by a relay.

When the switch 11 is off, the Wheatstone bridge circuit 10 becomes unbalanced, so that an unbalanced current flows through the R lamp and the R lamp 4 is turned on. In this case, R lamp lighting circuit according to the resistance R _1, R ₂ and R ₄ are formed for the R light 4, resistor R ₃
And the side where the switch 11 is in is removed from the R lamp lighting circuit. The lighting current when the R lamp 4 is lit is the current detection end.
12 detected by the current detection circuit 13
Control for turning off the G lamp 3 is added to 14. Therefore, when the R light is on, the G light 3 is extinguished.
When the switch 11 is substantially turned off due to poor contact or the like, the R lamp 4 is turned on and the G lamp 3 is extinguished.

When the switch 11 is turned on, the Wheatstone bridge circuit 10 equilibrates, and the current required for lighting does not flow through the R lamp 4, and the R lamp extinguishing circuit is configured. The fact that the lighting current stops flowing is detected by the current detection terminal 12, and the current detection circuit 13 controls the driver circuit 14 so that the G lamp 3 is turned on. Thereby, the G lamp 3 is turned on.

<Effects of the Invention> As described above, the signal light control device according to the present invention includes:
An R lamp lighting circuit in which a power supply and an R lamp are directly connected without a circuit opening / closing means, and an R lamp lighting circuit for interrupting light beams of the R lamp or canceling electric energy supplied from a power supply. And an R lamp extinguishing circuit that extinguishes the R lamp to eliminate non-lighting of the R lamp due to a contact failure, etc.
It is possible to provide a highly reliable signal light control device capable of reliably lighting R and the like when necessary.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram of a signal light control device according to a first invention according to the present invention, FIG. 2 is an electric circuit diagram of a signal light control device according to a second invention, and FIG. It is an electric circuit diagram. 1 power supply 3 G light 4 R light 6 Shutter 62 Stay 7 Driving circuit 8 Switch 9 Contact 10 Wheatstone bridge circuit 11 Switches R _{1 to} R ₄ ...... Resistance

Claims (5)

(57) [Claims] At least a signal light control device for turning on or off a stop indicating light and a progress indicating light, wherein a power supply and the stop indicating light are directly connected without a circuit opening / closing means. A stop indicating indicator light lighting circuit to be connected, a stop indicating indicator light extinguishing circuit for interrupting and extinguishing a light beam from the stop indicating indicator light, and the extinguishing of the stop indicating indicator light, A signal light control device comprising: a progress indicator light which turns on the progress indicator light. 2. The stop-indicating indicator light extinguishing circuit includes a shutter that blocks light from the stop-indicating indicator light, a drive circuit that drives the shutter, and a switch that opens and closes the drive circuit. The signal light control device according to claim 1, wherein: 3. A signal light control device for turning on or off at least a stop indicating lamp and a progress indicating lamp, wherein a power supply and the stop indicating lamp are directly connected without a circuit opening / closing means. A stop indicating indicator lighting circuit to be tied, and an energy for canceling electrical energy supplied from the power supply to the stop indicating indicator to the stop indicating indicator lighting circuit, the stop indicating indicator. A stop indication light extinguishing circuit for extinguishing a lamp, and a progress indication light lighting circuit for lighting the progress indication light on condition that the stop indication light is extinguished. Signal light control device. 4. A Wheatstone bridge circuit in which a switch is connected to one side and the power supply and the stop indicator are connected diagonally, and the R is determined by the balance of the Wheatstone bridge circuit by the operation of the switch. 4. The signal lamp control device according to claim 3, wherein a lamp extinguishing circuit is configured, and the R lamp lighting circuit is configured by imbalance. 5. The progress indicator lamp lighting circuit according to claim 4, wherein said progress indicator lamp lighting circuit detects a balance of said Wheatstone bridge circuit and turns on said progress indicator lamp. The signal light control device according to the paragraph.