JPH0436996Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for controlling lighting lights of in-vehicle electronic devices such as radio receivers and magnetic tape playback devices. The present invention relates to a device for controlling illumination lights provided behind a liquid crystal display device and illumination lights embedded in various operation switches.

BACKGROUND TECHNOLOGY Electronic devices such as radio receivers and magnetic tape playback devices are often equipped with internal lighting to improve the visibility of, for example, display of reception frequency and playing time, or operation switches.
Therefore, when such lighting is used for in-vehicle electronic equipment, the interior of the vehicle may become too bright at night, impairing the driver's visibility, so it is necessary to reduce the brightness of the lighting. A configuration is provided for turning the light on or off.

FIG. 3 is a simplified block diagram showing the electrical configuration of a typical conventional illumination lamp control device 1. As shown in FIG. An accessory switch 4 is interposed in the power line 3 from the battery 2, which enables the use of electrical loads installed in the automobile.By conducting the accessory switch 4, the ignition circuit of the internal combustion engine is connected. 5 can be powered. A power switch 7 of the radio receiver 6 is also connected in series to the accessory switch 4, and the power switch 7 and the accessory switch 4 are connected in series.
The radio receiver 6 is energized and can perform a receiving operation by establishing conduction between the two terminals.

Associated with the radio receiver 6 is a lamp 8, one terminal of which is connected to the battery 2, and the other terminal connected to the collector of a transistor 9. The base of this transistor 9 is supplied with an output from a processing circuit 10 realized by a microcomputer or the like, and the emitter of this transistor 9 is grounded. The processing circuit 10 is connected to a line 12 connecting the accessory switch 4 and the power switch 7 via a line 11, and is connected to a line 12 connecting the accessory switch 4 and the power switch 7.
3 to a line 14 connecting the power switch 7 and the radio receiver 6. Therefore, the switching states of accessory switch 4 and power switch 7 can be detected from the potentials of lines 11 and 13. This processing circuit 10
is also grounded via the operating switch 15.

In the illumination light control device 1 configured as described above, the processing circuit 10 turns on the transistor 9 every time the operating switch 15 is operated while the accessory switch 4 and the power switch 7 are in a conductive state.
changes the output level to the bass. As a result, when a high level output is derived from the processing circuit 10 to the base of the transistor 9, the transistor 9 becomes conductive and the lighting lamp 8 is turned on. On the other hand, when a low level output is derived, the transistor 9 is cut off and the lighting lamp 8 is turned off. In this way, each time the operation switch 15 is operated, the illumination light 8
can be turned on/off repeatedly.

Problems to be Solved by the Invention In the conventional illumination light control device 1 as described above, after the illumination light 8 is turned off and the radio receiver 6 is used, for example during nighttime exercise, the accessory switch 4 and the power switch are turned off. radio receiver 6 by blocking at least one of 7.
When the user starts using the radio receiver 6 again after finishing using the radio receiver 6, the illumination light 8 remains off. Therefore, the user is required to use this radio receiver 6.
This may lead to the misunderstanding that the device is malfunctioning. Furthermore, if it is desirable to turn on the illumination lamp 8 when starting to use the radio receiver 6, the operation switch 15 must be operated, which is cumbersome.

The purpose of this invention is to provide an in-vehicle electronic device with improved operability, which can indicate to the user that normal operation is being performed by turning on a light when the electronic device starts to be used. An object of the present invention is to provide a lighting control device.

Means for Solving the Problems The present invention provides lighting lamps that are connected to a power source through a sidemarker light switch provided in an automobile and connected to the power source, and are used for interior lighting or backlighting. A lighting light control device for an in-vehicle electronic device, comprising: a power switch that connects and connects the in-vehicle electronic device to a power source; an operation switch that switches on/off the lighting light; the side marker light switch; and a power switch. and the switching state of the operation switch, and when the vehicle width light switch is in a conductive state and the power switch is in a conductive state, the illumination light is switched between turning off and on each time the operation switch is operated, and the vehicle width This lighting control device for a vehicle-mounted electronic device is characterized in that it includes a control means for once turning on the lighting regardless of the switching states of the power switch and the operation switch when the lighting switch is turned on.

Function According to the present invention, the in-vehicle electronic device is connected to a power source via a power switch, and by making the power switch conductive, the in-vehicle electronic device is energized.

Furthermore, this in-vehicle electronic device is equipped with a lighting lamp, and this lighting lamp is turned on by the control means when the power switch is turned on while the sidemarker light switch is in the conducting state, and then the operation switch is turned on. When the light is operated, the control means repeats turning off and lighting on each time the light is operated. Further, even if the power switch is cut off, the control means once turns on the illumination lights when the sidemarker light switch is turned on.

Therefore, regardless of whether or not the illumination light was turned on when the vehicle-mounted electronic device was used last time, the illumination light is turned on when the vehicle-mounted electronic device starts to be used. This prevents the user from misunderstanding a malfunction or the like, and improves the operability of turning on/off the illumination light when the in-vehicle electronic device is reused.

Furthermore, since the illumination lights are turned on once the sidemarker light switch is turned on, the position of the power switch can be easily confirmed when operating the vehicle-mounted electronic equipment at night.

Embodiment FIG. 1 is a block diagram showing the electrical configuration of a lighting lamp control device 21 according to an embodiment of the present invention. Electric power from the battery 22 is supplied to an accessory switch 24 via a power line 23, and by making the accessory switch 24 conductive, the power is supplied to the ignition circuit 26 of the internal combustion engine via a line 25.
It is possible to supply electric power to an internal combustion engine and operate an internal combustion engine. The line 25 also includes a power switch 2 for a radio receiver 27, which is an in-vehicle electronic device.
By connecting this power switch 28 and the accessory switch 24, electric power is supplied to the radio receiver 27 and a receiving operation can be performed.

The power line 23 also includes a vehicle side light switch 3.
0 is connected, and by making the sidemarker light switch 30 conductive, power from the battery 22 is supplied to the sidemarker light 32 and the illumination light 33 provided inside the instrument panel via the line 31. be done. Furthermore, even when the headlights of the vehicle are turned on by a configuration not shown, the sidemarker light switch 30 is conductive.

Inside the radio receiver 27, an illumination lamp 34 is provided, for example, as a backside illumination of a liquid crystal display device that displays the received frequency, and one terminal of this illumination lamp 34 is connected to the line 31,
The other terminal is connected to the collector of transistor 35. The base of the transistor 35 is realized by, for example, a microcomputer, and is connected to the output terminal Q of a processing circuit 36, which is a control means, and the emitter is grounded.

The output of the AND gate 37 is applied to the input terminal P1 of the processing circuit 36. One input of the AND gate 37 is connected to the line 31 via a constant voltage circuit 38, and therefore, when the sidemarker light switch 30 is turned on, this
One input of AND gate 37 becomes high level. One contact of an operating switch 40 is connected to the other input of the AND gate 37 via an inverting buffer 39, and the other contact of the operating switch 40 is grounded. Therefore, when the operating switch 40 is turned on, it is inverted by the inverting buffer 39 and the other input of the AND gate 37 becomes high level.

An input terminal P2 of the processing circuit 36 is connected to the accessory switch 24 via a line 41, and when the accessory switch 24 is turned on, this input terminal P2 becomes a high level, thus changing the switching state of the accessory switch 24. can be detected. Further, the input terminal P3 of the processing circuit 36 is connected to the power switch 28 via a line 42, and when the accessory switch 24 and the power switch 28 are both electrically connected, the input terminal P3 becomes a high level. Therefore, the processing circuit 36 can detect the switching state of the power switch 28 based on the inputs from the input terminal P2 and the input terminal P3. Power input terminal Vcc of processing circuit 36
Power is directly supplied from the battery 22 through the constant voltage circuit 43.

In the illumination light control device 21 configured as described above, the sidemarker light switch 30 is turned on to turn on the sidemarker lights 32 and illumination lights 33, and the accessory switch 24 and power switch 28 are turned on to turn on the radio. When the operation switch 40 is operated while the receiver 27 is in the receiving operation,
Each time this operation is performed, the output level of the output terminal Q of the processing circuit 36 is inverted, thereby making the transistor 35 conductive/cut off, and the lighting lamp 34 can be controlled to turn on/off.

Further, when both the accessory switch 24 and the power switch 28 are turned on and the radio receiver 27 starts receiving operation, the output terminal Q of the processing circuit 36 becomes high level, and the lighting lamp 34 is turned on.

FIG. 2 is a flowchart for explaining the operation of turning on/off the lighting lamp 34 by the processing circuit 36. At step n1, accessory switch 2
It is determined whether or not the power switch 28 is conductive. If so, the process moves to step n2, and it is determined whether the power switch 28 is conductive.

When the power switch 28 is turned on in step n2, that is, when the radio receiver 27 is performing a receiving operation, the process moves to step n3.
It is determined whether the operation switch 40 has been operated. At step n3, operate switch 4.
When 0 is operated, the process moves to step n4, where it is determined whether the output terminal Q is at high level. If not, the output level is inverted to high level at step n5, and the process returns to step n1.
When the output terminal Q is at high level in step n4, the output level is inverted to low level in step n6 and the process returns to step n1.

Further, in step n3, if the operating switch 40 is not operated, the step
Return to n1. Furthermore, when the accessory switch 24 is not conductive in step n1 and the power switch 28 is not conductive in step n2, that is, when the radio receiver 27
If the receiving operation is not being performed, the process moves directly to step n5, sets the output terminal Q to a high level, and returns to step n1.

In other words, even if the accessory switch 24 and the power switch 28 are not electrically connected, the output terminal Q of the processing circuit 36 is at a high level in this state, so the illumination lights 34 can be turned on simply by electrically conducting the sidemarker light switch 30. can do.

In this way, in this embodiment, the vehicle side light switch 30
When the reception operation of the radio receiver 27 is started in a state where the
When the side marker light switch 30 is turned on while the reception operation is not being performed, the illumination light 34 is turned on regardless of the previous usage state, and then, in response to the operation of the operation switch 40, the operation of that operation is performed. The light turns off/lights on repeatedly. Therefore, when starting to use the radio receiver 27, it is possible to display that the lighting lamp 34 is operating normally without giving the user a misunderstanding that the lighting lamp 34 is malfunctioning, and to improve operability. can be improved.

Effects of the invention As described above, according to the invention, the lighting lights are turned on when the in-vehicle electronic equipment starts to be used, regardless of whether or not the lighting lights were turned on during the previous use. It is possible to improve the operability of turning on/off the illumination lights when reusing the in-vehicle electronic equipment without causing misunderstandings such as malfunctions.

In addition, since the illumination lights are turned on once the vehicle width light switch is turned on, the position of the power switch can be easily confirmed even at night, improving operability when starting to use the in-vehicle electronic equipment at night. can do.

[Brief explanation of drawings]

FIG. 1 shows a lighting control device 2 according to an embodiment of the present invention.
1 is a block diagram showing the electrical configuration of the illumination lamp control device 1, FIG. 2 is a flowchart for explaining the lighting/extinguishing operation of the illumination lamp 34 by the processing circuit 36, and FIG. 3 is the electrical configuration of the illumination lamp control device 1 of the prior art. FIG. 21...Lighting light control device, 22...Battery,
23...Power line, 24...Accessory switch, 26...Ignition circuit, 27...Radio receiver,
28... Power switch, 30... Vehicle side light switch, 32... Vehicle side light, 34, 35... Lighting light, 3
5...transistor, 36...processing circuit, 40...
...Operation switch.

Claims (1)

[Scope of Claim for Utility Model Registration] Vehicle-mounted vehicle equipped with a lighting lamp that is connected to the power source through a sidemarker light switch that connects the power source and the sidemarker light installed in the vehicle, and is used for interior lighting or backlighting. A lighting light control device for an electronic device, comprising: a power switch that connects and connects the in-vehicle electronic device to a power source; an operating switch that switches on/off the lighting light; and a sidewall light switch, a power switch, and an operating switch. detects the switching state of the lamp, and when the sidemarker light switch is in a conductive state and the power switch is in a conductive state, the illumination light is switched between turning off and on each time the operation switch is operated; An illumination light control device for an on-vehicle electronic device, comprising: a control means for temporarily turning on the illumination lamp regardless of the switching state of the power switch and the operation switch during a conduction operation.