JPH0545571Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device that automatically controls the lighting of a vehicle's instrument panel illumination based on, for example, detection signals from a door sensor and a light sensor.

[Conventional technology]

Conventionally, as this type of technology, for example,
As shown in Japanese Patent No. 82954, there was a device that controlled lighting of a room lamp for a predetermined period of time in response to the opening and closing of a door.

[Problem that the invention attempts to solve]

However, recently there has been a demand for a vehicle that turns on the lights on the instrument panel to welcome passengers when the door is opened at night, but it has been difficult to meet this demand with the above-mentioned conventional technology.

[Means for solving the problem] This invention was made in response to the above-mentioned problem, and includes a lighting lamp that illuminates the instrument panel of the vehicle, a relay that lights the lighting lamp, and a relay that illuminates the instrument panel of the vehicle. A door sensor that detects door opening/closing, and a light sensor that responds to the illuminance outside the vehicle are connected as inputs, and when the door sensor detects the opening of the door and the light sensor detects only a dark state, the relay is activated. The present invention provides an automatic lighting control device for an instrument panel illumination lamp, characterized by comprising a control circuit that outputs an activation signal for a predetermined period of time.

[Effect]

The automatic lighting control device for instrument panel illumination lights comprising the above means operates as follows.

That is, the control circuit outputs a control signal to the relay to turn on the lamp on the instrument panel for a predetermined period of time when the door is opened to get into the vehicle at night.

Also, if you open the door to get out of the vehicle,
Due to the function of the seating sensor, the control circuit does not output a control signal to the relay.

〔Example〕

FIG. 1 is a circuit diagram showing a preferred embodiment of this invention, which includes a lighting lamp 1 that illuminates the instrument panel of a vehicle, and a relay 2 that lights the lighting lamp 1.
, a seating sensor 3 that detects whether an occupant is seated, a door sensor 4 that detects opening/closing of a vehicle door, and an optical sensor 5 that responds to the illuminance outside the vehicle. 3 detects a non-seated state, the door sensor 4 detects the opening of the door, and the control circuit 6 outputs an activation signal to the relay 2 for a predetermined time when the optical sensor 5 detects only a dark state. ing. Further, a DC power source 7 is connected to the illumination lamp 1. The operation of the above embodiment will be explained with reference to the characteristic diagram shown in FIG.

First, at night, when the optical sensor 5 detects a dark state as shown in FIG. 2 a), the time t1 [seconds]
When the opening of the door is detected by the door sensor 4 as shown in FIG. 2 b), the control circuit 6 sends a signal to the relay 2 for a time t2 [seconds] as shown in FIG. 2 d).
The excitation signal is output until As a result, the illumination light 1 is turned on from time t1 [seconds] to time t2 [seconds] when the door is opened to get into the vehicle at night.

If a lighting switch (not shown) is turned on before the time t2 (seconds), the illumination lamp 1 is supplied with power by the lighting switch and continues to be lit.

Next, when the door is opened to exit the vehicle at time t3 [seconds], the door sensor 4 detects the opening of the door as shown in Fig. 2 b), but at this time the seating sensor 3 detects the opening of the door as shown in Fig. 2 c). As shown, the seating state is detected, and as a result, the lighting conditions set by the control circuit 6 for the illuminating lamp 1 are not satisfied, and the illuminating lamp 1 is not turned on.

Note that this invention is not limited to the above-mentioned embodiments,
For example, the seating sensor 3 may be omitted as appropriate, and the door sensor 4 may be configured with a door key cylinder operating switch provided outside the vehicle door. Further, the optical sensor 5 may also serve as the optical sensor 5 used in a so-called light controller that automatically controls turning on and off of the headlights according to the illuminance outside the vehicle.

[Effect of idea]

Since this invention has the above-mentioned structure and operation, it has the effect that the illumination light on the instrument panel can be turned on automatically when the door is opened at night.

[Brief explanation of drawings]

FIG. 1 is an electrical circuit diagram showing a preferred embodiment of this invention. FIG. 2 is an electrical characteristic diagram showing the operation of FIG. 1. 1...Lighting light, 2...Relay, 3...Seating sensor, 4...Door sensor, 5...Light sensor, 6...
control circuit.

Claims (1)

[Scope of utility model registration request] A lighting lamp that illuminates the instrument panel of the vehicle, a relay that lights the lighting lamp, a door sensor that detects opening and closing of the door of the vehicle, a light sensor that responds to the illuminance outside the vehicle, and an input connection of the two sensors and the door sensor. 1. An automatic lighting control device for an instrument panel illumination lamp, comprising: a control circuit that outputs an activation signal to the relay for a predetermined period of time when the optical sensor detects the opening of a door and the optical sensor detects only a dark state.