ELECTRONIC CIRCUIT FOR A BLIND-SPOT MONITORING DISPLAY

• US 20170113620A1
• Filed: 05/05/2015
• Published: 04/27/2017
• Est. Priority Date: 05/12/2014
• Status: Abandoned Application

• Current Assignee: SMR Patents Sarl (SMR Patents)
• Original Assignee: SMR Patents Sarl (SMR Patents)
• Inventors: Fritz, Daniel
• Application Number:
  US15/310,620
• Publication Number:
  US 20170113620A1
• Time in Patent Office: Days
• CPC Class Codes: B60Q 1/2665 on rear-view mirrors lighting devices for vehicle interior on or for rear-view mirrors B60Q3/258
• CPC Class Codes: B60Q 9/008 for anti-collision purposes
• CPC Class Codes: B60R 1/06 mounted on vehicle exterior B60R1/025, B60R1/08 take precedence
• CPC Class Codes: B60R 1/12 Mirror assemblies combined with other articles, e.g. clocks
• CPC Class Codes: B60R 1/1207 with lamps; with turn indicators
• CPC Class Codes: B60R 2001/1215 with information displays
• CPC Class Codes: H05B 45/30 Driver circuits
• CPC Class Codes: H05B 45/50 responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits

Abstract

The invention relates to an electronic circuit for a blind-spot monitoring display, having a circuit carrier; a first light source and a second light source mounted to the circuit carrier. A circuit connection is mounted to the circuit carrier, which circuit connection is coupled to the first light source and the second light source. The electronic circuit comprises circuit means which are designed, on the basis of a polarity of a voltage applied to the circuit connection to supply current either to the first light source or to the second light source.

Claims

1. An electronic circuit an illumination device in a rear-view device for a motor vehicle, comprising:

a circuit carrier,

at least one first light source mounted to the circuit carrier,

at least one second light source mounted to the circuit carrier and

at least one circuit connection mounted to the circuit carrier which circuit connection is coupled to at least one of the at least one first light source and to at least one of the at least one second light source, wherein

the electronic circuit comprises at least one first circuit means functionally assigned to at least one first light source and at least one second circuit means functionally assigned to at least one second light source, through which, corresponding to a voltage applied to the circuit connection, the first light source and/or the second light source can be supplied with current, characterized in that, during operation, the first light source and the second light source emit light having different wavelengths, and wherein the voltage applied to the circuit connection comprises an on-board voltage of a motor vehicle.

2. The electronic circuit according to claim 1, wherein the circuit connection comprises two separate connectors.

4. The electronic circuit according to claim 1, wherein the first light source and the second light source comprise light-emitting diodes.

5. The electronic circuit according to claim 1, wherein the first circuit means and/or the second circuit means comprise two diodes switched inversely to one another.

6. The electronic circuit according to claim 5, wherein the two diodes switched inversely to one another comprise a first inverse-polarity protection diode switched in series with the first light source and a second inverse-polarity protection diode switched in series with the second light source.

7. The electronic circuit according to claim 6, wherein the two serial connections of first light source and first inverse-polarity protection diode and second light source and second inverse-polarity protection diode are switched parallel to one another.

8. The electronic circuit according to claim 7, wherein the electronic circuit has a capacitance which is switched parallel to the two serial connections of first light source and first inverse-polarity protection diode and second light source and second inverse-polarity protection diode.

9. The electronic circuit according to claim 8, wherein the electronic circuit has a connection cable which connects the two serial connections of first light source and first inverse-polarity protection diode and second light source and second inverse-polarity protection diode to the circuit connection.

10. The electronic circuit according to claim 9, wherein the capacitance comprises exclusively the connection cable.

11. The electronic circuit according to claim 1 wherein the electronic circuit comprises an electronic circuit of a blind-spot monitoring display and/or a route indicator.

12. A driver-assistance system, comprising:

a control device;

an electronic circuit according to claim 1, and

connection means which are designed to connect the electronic circuit to the control device,

characterized in that the control device comprises control means which are designed, on the basis of a state of the control device, to supply to the circuit connection of the electronic circuit a voltage of a first polarity or a voltage of a second polarity.

13. A rear-view device for a motor vehicle having at least one electronic circuit according to claim 1.

14. A method for producing an electronic circuit according to claim 1 for an illumination device, the method including the steps of:

providing a circuit carrier;

mounting a first light source and a second light source to the circuit carrier;

mounting a circuit connection to the circuit carrier; and

mounting circuit means to the circuit carrier, in order to interconnect the first light source and the second light source and connect same to the circuit connection,

wherein the circuit means switch the first light source and the second light source inversely to one another and in each case secure the same using an inverse-polarity protection diode.

15. A motor vehicle having at least one rear-view device according to claim 13, having at least one driver-assistance system according to claim 12, and/or having at least one electronic circuit according to claim 1.

3. (canceled)