JPS6040352Y2 - pilot lamp device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pilot lamp device suitable for use in, for example, a motorcycle, and includes one pilot lamp for confirming turn signal action and one pilot lamp for monitoring oil level. This ensures that it will work even if you were trying to get by with something like this.

Vehicles such as motorcycles are equipped with turn signal lamps to notify other vehicles and passersby that they are changing direction.

Additionally, some engine models are equipped with an oil tank that stores lubricating oil in addition to fuel oil, and these types of motorcycles detect the oil level and detect when the amount falls below a certain value. Sometimes, a pilot lamp is lit to notify the driver of the condition.

Two pilot lamps, which are provided for two purposes, would be required if they were to be lit using a normal circuit, but providing two pilot lamps would be a space issue on motorcycles, etc. It is desirable to devise a circuit so that both types of operation can be confirmed using one pilot lamp, and such circuits have been devised and put into practical use in the past.

By the way, the frequency of use of the turn signal lamp and the incidence of oil level drop are significantly different.

That is, turn signal lamps are used every time a vehicle makes a left or right turn, whereas a low oil level normally does not drop enough to warrant a warning if the driver is careful. It's something you don't do.

For this reason, with pilot lamp devices installed in conventional vehicles, the pilot lamp remains lit when the oil level drops, which rarely occurs, and even if the turn signal lamp is activated at that point. , the pilot light did not flash.

If an attempt was made to solve this inconvenience, a problem arose in that the circuit became complicated and the space for accommodating it increased.

The present invention was developed in view of this point, and even when the oil level is low and the pilot lamp continues to light, when the turn signal lamp is activated, the pilot lamp blinks. It is something.

An embodiment of the present invention will be explained with reference to FIG. 1. Reference numeral 1 denotes a terminal on the positive side of the power supply, which is connected to a battery, etc. (not shown), and receives a constant DC voltage between it and the ground side (not shown). be.

A movable contact 4 of a turn signal switch 3 is connected to this terminal 1 via a turn signal relay 2.

Two fixed contacts 5 on the output side of the turn signal switch 3
, 6 is connected to a relay coil 7, and turn signal lamps 8, 9 are connected between these fixed contacts 5, 6 and ground, respectively.

The turn signal lamp 8 is for left turns, and the turn signal lamp 9 is for right turns.

Further, a normally closed contact 10 of a relay, a pilot lamp 11, and an oil level switch 12 are connected in series between the terminal 1 and the ground.

The normally closed contact 10 opens when the coil 7 is energized, and the oil level switch 12 closes when the amount of oil in an oil tank (not shown) falls below a certain value.

A diode 13 whose forward direction is from the pilot lamp 11 side to the turn signal switch 3 side is connected between the ground side of the pilot lamp 11 and the movable contact 4 of the turn signal switch 3.

This pilot lamp device configured in this manner operates as follows.

■ When the oil level is high and the oil level switch 12 is open.

In this case, if the turn signal switch 3 is open as shown in the figure (the vehicle is traveling straight), the pilot lamp 1
Since no current flows through the pilot lamp 11, the pilot lamp 11 does not light up.

The movable contact 4 of the turn signal switch 3 is connected to the fixed contact 5 (
or 6) (when the vehicle turns left or right), the current from terminal 1 flows through turn signal relay 2, movable contact 4, fixed contact 5 (or 6), and turn signal lamp 8 (or 9). In addition to making this blink, intermittent current also flows through the coil 7 of the relay to open and close the normally closed contact 10, and the pilot lamp 11 receives current through the diode 13, the turn signal switch 3, and the turn signal lamp 8 (or 9). is flowing, and the pilot lamp 11 blinks.

■ When the oil level is low and the oil level switch 12 is closed.

In this case, if turn signal switch 3 is open,
Since no current flows through the coil 7 of the relay, the normally closed contact 10
remains closed and the current from terminal 1 flows through normally closed contact 10.
, the pilot lamp 11, and the oil level switch 12, so the pilot lamp 11 will continue to light up to notify the driver of the drop in the oil level.

When the movable contact 4 of the turn signal switch 3 is brought into contact with the fixed contact 5 (or 6), the turn signal lamps 8 and 9 will flash in the same way as described above, but the pilot lamp 11 will have a normally closed contact of a relay that opens and closes. 10, pilot lamp 11, diode 13, turn signal switch 3
, the current flowing through the turn signal lamp 8 (or 9) (
'Wl current (continuous current) flows from the pilot lamp 11 through the oil level switch 12 (continuous current).
In reality, the latter flows more often due to the resistance value), so the pilot lamp 11 will blink.

In this way, whether the oil level switch 12 is closed or open, if the movable contact 4 of the turn signal switch 3 is closed to either fixed contact 5 (or 6), the pilot lamp 11 can be made to blink. Become.

Note that the normally closed contact 10 of the relay is not limited to the connection location shown in FIG. 1, but may be connected to other locations in the series circuit of the power supply, pilot lamp 11, and oil level switch 12, for example, the location shown in FIG. 2. However, the same effect as described above can be obtained.

Since the present invention is configured as described above, it has the following effects.

■ Even if the oil level switch is open or closed depending on the oil level, if you close the turn signal switch, the pilot lamp will flash, so you can confirm the operation of the turn signal lamp.

■ If one of the multiple turn signal lamps installed at the front and rear of the vehicle is disconnected, the pilot lamp 11 will go out due to the decrease in current, but this state is the opposite of the situation in which it is turned on when the oil level is low. Therefore, each situation can be determined without fail.

■ Since there is no need to modify the bundle switch or level switch, it is advantageous in terms of space and cost.

Also, since it is a turn signal priority circuit, there are no problems with vehicle maintenance standards.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of one embodiment of the present invention, and FIG. 2 is a circuit diagram of another embodiment of the present invention. 1...Terminal, 2...Turn signal relay 3...Turn signal switch, 4...
...Movable contact, 5.6...Fixed contact, 7.
・Bun coil, 8, 9・Bun ・Turn signal lamp, 10
.......Normally closed contact, 11...Pilot lamp, 12...Oil level switch, 13.
·····diode.

Claims (1)

[Scope of utility model registration request] A coil of a relay is connected between two fixed contacts on the output side of the turn signal switch, a normally closed contact of the relay is connected in series in a series circuit of a power supply, a pilot lamp, and an oil level switch, and A pilot lamp device characterized in that a diode whose forward direction is from the pilot lamp side to the turn signal switch side is connected between the lamp and the movable contact of the turn signal switch.