FI63899B - KOPPLINGSANORDNING FOER BELYSNING HOS BILAR - Google Patents

Description

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C ^ Fe lc .. ·. · · -: /: - Λ * '· -3 ^ ^' (51) Kv.ik.3 / int.ci.3 B 60 Q 1/08 FINLAND — FINLAND pi) ^ nttihrt »mu.-pw« wötaiii . | 790) +53 (22) HtkamftpiWi - AMMcnlngarfag 12.02.79 * (23) AlkupUvt — GHtighatadai 12.02.79 (41) Tulhft JulkiMleal - Uhrit effantllg 13.08.80 _, __. . . ._, (44) Date of NihdvilMlpwon and moonshine. - 31.05.83

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(32) (33) (31) Privilege requested — Begird prlorltet (71) Insinööritoimisto Esko Kuokkanen, Punavuorenkatu 18, 00150 Helsinki 15, Finland-Finland (EI) (72) Esko Kuokkanen, Helsinki, Finland-Finland (FI) (? i) CG. Gädeke (5) +) Light switchgear for cars - Kopplingsanordning för belysning hos bilar

The invention relates to a car headlight switching device for switching headlights to spotlights and vice versa according to outdoor lighting.

The so-called yellow there are precise settings for using the spotlights. After all, they should only be used when there is sufficient outdoor lighting, and they do not in any way replace headlights at dusk, nor are they any city lights in the evening and at night. In addition, the regulation states that headlights must be used e.g. when visibility is poor due to fog, rain or similar. The use of warning lights is therefore strictly limited, but when used correctly, they increase road safety, because the car, as the name suggests, becomes easier to pay attention to.

Relay-controlled spotlights are usually installed so that power is taken from the ignition key, so the spotlights come on as soon as the power is turned on. After that, the driver has a choice of lights, headlights or spotlights corresponding to the lighting conditions. The connection thus depends on the driver's judgment and memory.

The object of the present invention is to automate the above-mentioned operation and to make it independent of human factors, while taking into account the prevention of delusional functions caused by certain interfering stimuli.

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The switching device according to the invention is mainly characterized in that it is equipped with a light measuring element which controls an electronic deceleration switching via an amplifier with a headlight switch-off delay (T) so that the device automatically switches the after the aforementioned delay (T), which delay is reset if the illumination during this time falls below a threshold again, by means of which temporary stimuli (such as the lights of oncoming vehicles) do not cause the headlights to change to attention lights.

The invention will be described in more detail below with reference to the accompanying drawing, which schematically shows an embodiment of the invention.

Drawing 1 shows the car ignition switch. 2 is a light measuring member having a sensitivity setting circuit and a photoresistor 2a. 3 is an amplifier and 4 is a hysteresis feedback.

5 There is a timer causing the delay T and 6 the previous zero line. 7 is an electronic changeover switch which, on the basis of the light measurement 2, alternatively switches the headlights 9 via the control relay 8 or the spotlights 11, 12 via the control relay 10 is a switch with which the headlights are switched on regardless of the lighting conditions, so-called a rain switch that resets electronically when the power is turned off by the ignition 1.

The switching device according to the invention operates as follows: When starting the car, the lights on the ignition 1 turn on and the light measuring element 2 provides information to the toggle switch 7, which immediately switches to either normal headlights 9 or attention lights 11 according to lighting conditions.

If the lighting is sufficient but visibility is limited by the road traffic setting (rain, fog, etc.), the driver switches on the headlights from switch 12. The device remembers the command until the next power off or until the lighting has dropped to a level that otherwise requires headlights. The command can be memorized already in the dark, eg on a rainy morning, and will not go out until the power is switched off or the light period is dimmed again.

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In the border areas of the lighting conditions, the device, thanks to the hysteresis-inducing feedback 4, tends to maintain the last switched-on state up to the set limit. Thus, the device is not sensitive to changes in the lighting boundary area.

To prevent spoofing, the device has the following backup:

Delay T operates from "headlights" to "spotlights". The delay is relatively long, the typical value is 20 s. The delay is implemented by means of an electronic reset timer 5. When the lighting rises above the set value, the timer starts and the switching from the headlights to the attention lights only takes place after a delay T. However, if the lighting falls below the set value again during the delay, the timer will be reset. As a result, temporary stimuli such as oncoming vehicle lights or street lighting peaks do not cause the headlights to go out, but a normal change in exterior lighting does.

Claims (3)

4. <z p g g Claims ^ ^ u y J A light switching device for cars for switching headlights to attention lights and vice versa for outdoor lighting, characterized in that it is remotely equipped with a light measuring element (2) which controls an electronic deceleration switch (5-6) reset via the amplifier (3) with a headlight off delay (T ) so that the device automatically switches the headlights to headlights when the exterior lighting falls below the threshold, and when the exterior lighting rises above the threshold, switches the headlights to the headlights after the above-mentioned delay (T), which is reset if vehicle headlights) do not cause the headlights to change to the attention lights. Switching device according to Claim 1, characterized in that if the lighting is sufficient but it is nevertheless desired to use headlights (rain, fog, etc.), the automation can be bypassed by an electronic switch (12) which remembers the command until or until the next switch-off. until the lighting has dropped to a level that otherwise requires the use of headlights. Switching device according to Claim 1, characterized in that it tends to maintain the last switched-on state up to a set limit by means of a hysteresis-inducing feedback (4), as a result of which the device is not sensitive to changes in the lighting boundary areas.