JP7294181B2 - light source controller - Google Patents

Description

The present disclosure relates to a light source control device.

2. Description of the Related Art Conventionally, a light source control device for controlling a light source has been put into practical use. Vehicles are equipped with various light sources such as headlights and daytime running lights, and it is required to control these light sources according to their purposes.

Therefore, as a technology for controlling daytime running lights, for example, Patent Document 1 discloses a vehicle that determines whether it is daytime based on information from a solar sensor or the like, and controls lighting of the daytime running lights based on the determination result. An ornamental component for is disclosed.

JP 2019-38315 A

However, since the vehicle decorative component of Patent Document 1 is not controlled according to the operation of the vehicle, the daytime running lights may turn on when the vehicle is stopped, for example.

An object of the present disclosure is to provide a light source control device that reliably controls lighting of a light source.

A light source control device according to the present disclosure includes a relay switch disposed between a first power source of a vehicle and a light source, a second power source that is turned on before the first power source, and a second power source that is turned on before the first power source. and a relay coil that switches the relay switch to the OFF state by energization. When the operation switch is in the OFF state, the energization to the relay coil is interrupted, and the relay in the ON state is provided. Power is supplied from the first power supply to the light source through the switch, and when the operation switch is in the ON state, the relay coil is energized from the second power supply, and the relay switch is switched to the OFF state, thereby turning off the first power supply. power supply to the light source is stopped.

According to the present disclosure, it is possible to reliably control lighting of the light source.

1 is a diagram showing a configuration of a vehicle provided with a light source control device according to an embodiment of the present disclosure; FIG. It is a figure which shows the structure of a light source control apparatus. FIG. 4 is a diagram showing the configuration of a light source control device that cannot control momentary lighting of daytime running lights; FIG. 10 is a diagram showing the connection state of the relay circuit when the key operation unit is switched to the "ON" position; FIG. 5 is a diagram showing a connection state of a relay circuit when a parking brake is released; It is a figure which shows the structure which concerns on the modification of a light source control apparatus.

Hereinafter, embodiments according to the present disclosure will be described based on the accompanying drawings.

FIG. 1 shows the configuration of a vehicle equipped with a light source control device according to an embodiment of the present disclosure. The vehicle has a cab 1 , a mounting section 2 , an operating section 3 , a headlight 4 , a daytime running light 5 and a light source control device 6 . Vehicles include, for example, commercial vehicles such as trucks.

The cab 1 is for passengers to board, and is arranged in the front part of the vehicle.
The mounting portion 2 is for loading, for example, luggage, and is arranged behind the cab 1 in the vehicle.

The operation unit 3 is for the driver to operate each part of the vehicle, and is arranged in the driver's seat of the cab 1 . The operation unit 3 includes, for example, a steering unit, a key operation unit, a parking brake, and the like.

The headlight 4 is a so-called headlight and is arranged in the front part of the cab 1 . The headlight 4 is turned on at night by the driver's operation, for example, to improve the driver's visibility.
The daytime running lights 5 are so-called daytime running lights, which are lit during the daytime to improve the recognition of the vehicle from the surroundings. The daytime running lights 5 are arranged below the headlights 4 and are formed to be lit with a lower luminous intensity than the headlights 4. - 特許庁The daytime running lights 5 can be composed of, for example, LED (Light Emitting Diode) lights.

The light source control device 6 is connected to the operation unit 3 and the daytime running lights 5 respectively, and controls lighting of the daytime running lights 5 according to the operation of the operation unit 3 .

Next, the configuration of the light source control device 6 will be described in detail.
As shown in FIG. 2, the light source control device 6 has a fuse 8a connected to an ignition power source 7a of the vehicle and a fuse 8b connected to an accessory power source 7b of the vehicle. The fuse 8a is connected to a relay switch 10 by a wire 9a, and the relay switch 10 is connected to the daytime running lights 5. As shown in FIG. The fuse 8a is connected in sequence to the protective diode 11a and the relay coil 12 by a wiring 9b branching from the wiring 9a, and the relay coil 12 is connected to an operation switch 13 connected to the parking brake 3b of the vehicle. . A relay resistor 14 is connected in parallel with the relay coil 12 . On the other hand, the fuse 8b is connected to the wiring 9b through the protective diode 11b by the wiring 9c, and is thereby connected to the relay coil 12. FIG.

Here, the key operation part 3a of the operation part 3 is for turning on the power of the vehicle and driving the engine. It is configured to be switchable between a position and a "START" position. When the key operation unit 3a is switched to the "LOCK" position, the power sources of the vehicle including the ignition power source 7a and the accessory power source 7b are turned off, and the engine is stopped. When the key operation unit 3a is switched to the "ACC" position, the accessory power source 7b is turned on. When the key operation unit 3a is switched to the "ON" position, the ignition power source 7a is turned on. When the key operation unit 3a is switched to the "START" position, the engine is driven.

Note that the key operation unit 3a is not particularly limited as long as it can switch the power of the vehicle between on and off. For example, the key operation unit 3a may be of a so-called push-start type in which a key is inserted to switch the power source, or a button is pressed by hand to switch the power source.

The ignition power source 7a supplies power to electrical equipment that is expected to be used, for example, while the engine is running, and is switched on and off by the key operation portion 3a.
The accessory power supply 7b supplies power to an electrical component whose power supply amount is smaller than that of the electrical component connected to the ignition power supply 7a, for example, and is switched on and off by the key operation section 3a. The "ACC (accessory)" position of the key operation unit 3a is located in front of the "ON" position with respect to the "LOCK" position, and the accessory power supply 7b is operated by the key operation unit 3a. Therefore, the ignition power source 7a is turned on before the ignition power source 7a.

The parking brake 3b of the operation unit 3 is a so-called friction brake, which is operated by the driver to brake the wheels.

The fuse 8a protects the light source control device 6 when a current of a predetermined value or more flows from the ignition power source 7a, and is formed so that the wiring is fused by a current of a predetermined value or more.
The fuse 8b protects the light source control device 6 when a current of a predetermined value or more flows from the accessory power source 7b, and is formed so that the wiring is fused by a current of a predetermined value or more.

The relay switch 10 is arranged between the ignition power source 7a and the daytime running light 5, and has a movable contact 10a, a fixed contact 10b, and a fixed contact 10c. The movable contact 10a is connected to the ignition power source 7a via the fuse 8a, and is also connected to the fixed contact 10b so as to be switchable to the fixed contact 10c. The fixed contact 10b is connected to the daytime running light 5 . The fixed contact 10c is arranged in a non-conducting state. That is, when the movable contact 10a is connected to the fixed contact 10b, the relay switch 10 is turned on to connect the ignition power source 7a to the daytime running light 5. As shown in FIG. Further, the relay switch 10 is in an OFF state in which the ignition power source 7a is not connected to the daytime running light 5 when the movable contact 10a is connected to the fixed contact 10c.

The relay coil 12 is arranged between the accessory power source 7b and the operation switch 13, and switches the relay switch 10 to an OFF state by energization, that is, switches to connect the movable contact 10a to the fixed contact 10c. The relay coil 12 is further connected to the ignition power supply 7a via a protective diode 11a and a fuse 8a by a wiring 9b branching from the wiring 9a.
Here, the accessory power source 7b is connected at a connection point P2 to a wiring 9b extending from a branch point P1 at which the wiring 9a branches to the relay coil 12. As shown in FIG. That is, the accessory power supply 7b is connected between the branch point P1 and the relay coil 12 via the wiring 9b.

The relay resistor 14 is for consuming the current continuously flowing through the relay coil 12 when the energization of the relay coil 12 is stopped.
A relay circuit 15 is composed of the relay switch 10 , the relay coil 12 and the relay resistor 14 .

The protection diode 11a is arranged between the branch point P1 and the connection point P2 on the wiring 9b, and suppresses current from flowing from the connection point P2 to the branch point P1 side.
The protection diode 11b is arranged between the accessory power supply 7b and the connection point P2 on the wiring 9c, and suppresses current from flowing from the connection point P2 to the accessory power supply 7b side.

The operation switch 13 is switched according to the operation of the parking brake 3b, and has one contact connected to the relay coil 12 and the other contact grounded. Here, the operation switch 13 is in an off state when the parking brake 3b is not actuated, and is provided so as to switch from the off state to the on state when the parking brake 3b is actuated.

It should be noted that the light source control device 6 can additionally include a circuit for automatically turning off the daytime running lights 5 in response to the lighting of the headlights 4 . For example, the light source control device 6 can control lighting of the daytime running lights 5 based on operation information of the headlights 4 .

Next, the operation of this embodiment will be described.

First, as shown in FIG. 2, the parking brake 3b is operated and the key operating portion 3a is operated to the "LOCK" position to bring the vehicle to a stop. The operating switch 13 is turned on by the operation of the parking brake 3b, and the ignition power source 7a and the accessory power source 7b are turned off by positioning the key operating portion 3a at the "LOCK" position. Therefore, power is not supplied from the ignition power supply 7a to the daytime running light 5 via the relay switch 10, and the daytime running light 5 is turned off.

Subsequently, the driver turns on the ignition power source 7a and the accessory power source 7b by switching the key operation portion 3a to the "ON" position via the "ACC" position while the parking brake 3b is operated.

Here, as shown in FIG. 3, when the connection with the accessory power supply 7b is excluded, that is, when the relay circuit 15 is controlled only by the energization from the ignition power supply 7a, while the relay coil 12 is energized from the ignition power supply 7a, , the relay switch 10 is also energized from the ignition power supply 7a. When the relay coil 12 is energized, the relay switch 10 is turned off by switching the movable contact 10a from the fixed contact 10b to the fixed contact 10c. However, since power is supplied from the ignition power source 7a to the daytime running light 5 until the movable contact 10a is switched to the fixed contact 10c, the daytime running light 5 may turn on momentarily. In particular, when an LED light is used as the daytime running light 5, the lighting speed is high, so there is a risk that the lighting time will be long.

Therefore, an accessory power supply 7b is connected between the branch point P1 and the relay coil 12, as shown in FIG. Here, the "ACC (accessory)" position of the key operation unit 3a is located in front of the "ON" position with respect to the "LOCK" position. Therefore, the accessory power supply 7b is turned on before the ignition power supply 7a by operating the key operation section 3a.
As a result, the relay coil 12 is energized from the accessory power supply 7b before the ignition power supply 7a is turned on. Therefore, as shown in FIG. 4, before power is supplied from the ignition power source 7a to the daytime running light 5, the relay switch 10 is switched to the OFF state connecting the movable contact 10a to the fixed contact 10c.

That is, when the operation switch 13 is in the ON state, the relay coil 12 is energized from the accessory power source 7b that was turned ON before the ignition power source 7a, and the relay switch 10 is switched to the OFF state, thereby turning the ignition power source 7a. , the power supply to the daytime running lights 5 is continuously stopped.
In this manner, electrical connection between the ignition power source 7a and the daytime running light 5 is suppressed immediately after the key operation unit 3a is switched to the "ON" position, and lighting of the daytime running light 5 is reliably controlled. can do. At this time, with a simple configuration in which the accessory power source 7b is connected between the branch point P1 and the relay coil 12, lighting of the daytime running lights 5 can be reliably controlled.

Subsequently, as shown in FIG. 5, the driver switches the key operation unit 3a to the "START" position to drive the engine, release the parking brake 3b, and start the vehicle. By releasing the parking brake 3b, the operation switch 13 is turned off.

When the operation switch 13 is turned off, the ignition power supply 7a and the accessory power supply 7b are deenergized from the relay coil 12, and the relay switch 10 is turned on to connect the movable contact 10a to the fixed contact 10b. As a result, power is supplied from the ignition power source 7 a to the daytime running lights 5 via the relay switch 10 .

Thus, the daytime running light 5 can be automatically turned on with a simple configuration in which the relay circuit 15 is arranged between the ignition power source 7a and the daytime running light 5.例文帳に追加As a result, the daytime running lights 5 can be turned on reliably, and the vehicle can be driven safely.
In addition, since the relay resistor 14 consumes the current flowing through the relay coil 12 when the current to the relay coil 12 is cut off, the relay switch 10 can be quickly turned on.

In addition, since the protection diode 11a is arranged between the branch point P1 and the connection point P2, it suppresses the flow of current from the accessory power source 7b to the branch point P1 side via the connection point P2. 5 can be lit stably.
In addition, since the protection diode 11b is arranged between the accessory power supply 7b and the connection point P2, it suppresses current from flowing from the ignition power supply 7a to the accessory power supply 7b side via the connection point P2. energization to the relay coil 12 can be maintained.

In this manner, the vehicle is driven with the daytime running lights 5 turned on. Then, when the vehicle is stopped again and the parking brake 3b is actuated, the operation switch 13 is turned on. As a result, the relay coil 12 is energized from the ignition power source 7a and the accessory power source 7b, and the relay switch 10 is turned off. By switching the relay switch 10 to the OFF state, power supply from the ignition power source 7a to the daytime running light 5 is stopped, and the daytime running light 5 is extinguished.

In this manner, the daytime running lights 5 can be automatically turned off when the vehicle stops, and unnecessary lighting can be suppressed.

According to the present embodiment, when the operation switch 13 is in the ON state, the relay coil 12 is energized from the accessory power source 7b, and the relay switch 10 is switched to the OFF state, whereby the ignition power source 7a is switched to the daytime running light 5. Power supply to As a result, the ignition power source 7a and the daytime running light 5 are prevented from being electrically connected immediately after the ignition power source 7a is turned on by operating the key operation part 3a, and the daytime running light 5 is reliably turned on. can be controlled.

In this embodiment, the relay coil 12 is connected to the ignition power source 7a and the accessory power source 7b, but it may be arranged between the accessory power source 7b and the operation switch 13, and is not limited to this. do not have.
For example, as shown in FIG. 6, protection diodes 11a and 11b can be removed, and new wires 21a and 21b can be arranged in place of wires 9a to 9c. Generally, when the key operation unit 3a is at the "START" position, the accessory power supply 7b is cut off. , the following configuration is possible.

The wiring 21a connects the ignition power source 7a to the movable contact 10a of the relay switch 10 via the fuse 8a.
The wiring 21b connects the accessory power supply 7b to the relay coil 12 via the fuse 8b.

That is, the wires 21a and 21b connect the ignition power source 7a only to the relay switch 10 and the accessory power source 7b to the relay coil 12 only, without being branched.

With such a configuration, when the key operation unit 3a is switched from the "LOCK" position to the "ON" position via the "ACC" position, before the ignition power supply 7a is turned on, the accessory power supply 7b is turned on. The relay coil 12 is energized through the wiring 21b. As a result, the relay switch 10 can be switched to the OFF state before power is supplied to the daytime running lights 5 from the ignition power supply 7a, and lighting of the daytime running lights 5 can be reliably controlled. At this time, with a simple configuration in which the ignition power source 7a is connected only to the relay switch 10 and the accessory power source 7b is connected only to the relay coil 12, lighting of the daytime running lights 5 can be reliably controlled.

Further, in the present embodiment, the relay circuit 15 is connected to the ignition power source 7a, but it is not limited to the ignition power source 7a as long as it is connected to the power source of the vehicle.
Further, in the present embodiment, the relay circuit 15 is connected to the accessory power supply 7b, but it may be connected to a power supply that is turned on before the power supply connected to the relay switch 10. is not limited to

Further, in the present embodiment, the operation switch 13 is switched according to the operation of the parking brake 3b, but it is not limited to the parking brake 3b as long as it can be switched according to the operation of the vehicle.

Moreover, in the present embodiment, the relay circuit 15 is connected to the daytime running lights 5, but it is not limited to the daytime running lights 5 as long as it is connected to the light source of the vehicle.

In addition, the above-described embodiments are merely examples of specific implementations of the present invention, and the technical scope of the present invention should not be construed to be limited by these. be. Thus, the invention may be embodied in various forms without departing from its spirit or essential characteristics. For example, the disclosure of the shape, number, etc. of each part described in the above embodiment is merely an example, and can be implemented with appropriate modifications.

INDUSTRIAL APPLICABILITY A light source control device according to the present disclosure can be used as a device for switching electrical connection between a power source of a vehicle and a light source.

1 Cab 2 Mounting Unit 3 Operation Unit 3a Key Operation Unit 3b Parking Brake 4 Headlight 5 Daytime Running Light 6 Light Source Control Device 7a Ignition Power Supply 7b Accessory Power Supply 8a, 8b Fuses 9a to 9c, 21a, 21b Wiring 10 Relay Switch 10a Movable contacts 10b, 10c Fixed contacts 11a, 11b Protection diode 12 Relay coil 13 Operation switch 14 Relay resistor 15 Relay circuit P1 Branch point P2 Connection point

Claims (5)

a relay switch positioned between the first power source of the vehicle and the light source;
a relay coil arranged between a second power supply that is turned on before the first power supply and an operation switch that is switched according to the operation of the vehicle, and that switches the relay switch to the off state by energization; prepared,
When the operation switch is in the OFF state, the power supply to the relay coil is interrupted, and power is supplied from the first power supply to the light source through the relay switch in the ON state,
When the operation switch is in the ON state, the relay coil is energized from the second power supply, and the relay switch is switched to the OFF state, thereby stopping power supply from the first power supply to the light source. light source controller. the relay coil is further connected to the first power supply by branching the wiring connecting the first power supply and the relay switch;
2. The light source control device according to claim 1, wherein said second power supply is connected between a branch point at which said wiring branches and said relay coil. a first protection diode disposed between the branch point and a connection point to which the second power supply is connected and suppressing current flow from the connection point to the branch point side;
3. The light source according to claim 2, further comprising a second protection diode disposed between said second power supply and said connection point, and suppressing a current from flowing from said connection point to said second power supply side. Control device. The first power supply is an ignition power supply that can be switched on and off by key operation,
The second power supply is an accessory power supply that is turned on prior to the ignition power supply by key operation,
4. The light source control device according to any one of claims 1 to 3, wherein the operation switch is switched from an OFF state to an ON state by operating a parking brake. The light source control device according to any one of claims 1 to 4, wherein the light source is a daytime running light.

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