Camera with heating element

• US 9,618,828 B2
• Filed: 12/10/2014
• Issued: 04/11/2017
• Est. Priority Date: 12/11/2013
• Status: Active Grant

• Current Assignee: Mekra Lang GmbH & Company KG
• Original Assignee: Mekra Lang GmbH & Company KG
• Inventors: Geissendrfer, Peter, Kunz, Manuel, Hornung, Michael, Lang, Werner, Witzke, Michael, Centmayer, Stefan
• Primary Examiner(s): Peterson, Christopher K
• Application Number:
  US14/566,225
• Publication Number:
  US 20150160536A1
• Time in Patent Office: 853 Days
• CPC Class Codes: G03B 17/55 with provision for heating or cooling, e.g. in aircraft
• CPC Class Codes: H04N 23/51 Housings
• CPC Class Codes: H04N 23/52 Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof

Abstract

A camera for use on vehicles, in particular commercial vehicles. The camera has a housing, at least one optical element disposed within the housing, a group of circuit boards disposed within the housing and including at least one circuit board. The group of circuit boards has at least one active circuit for executing a direct camera function. The camera further comprises at least one heating element adapted for heating the group of circuit boards, the optical elements, and/or the housing, wherein the at least one heating element is directly attached to one of the circuit boards of the group of circuit boards.

Claims

1. A camera for use on vehicles, comprising:

a unitary housing;

at least one optical element disposed within and in contact with the unitary housing;

at least one group of circuit boards disposed within the unitary housing and including at least one circuit board, the at least one group of circuit boards having at least one active circuit for executing a direct camera function;

at least one heating element arranged and adapted to heat the group of circuit boards, the optical element and/or the unitary housing, the at least one heating element being directly attached to one of the circuit boards of the group of circuit boards;

one or more heat conducting elements disposed between the at least one heating element and the unitary housing and adapted to transfer the heat of the heating element and/or the group of circuit boards to the unitary housing; and

a cover glass configured to seal the unitary housing,

wherein at least one of the one or more heat conducting elements directly contacts at least one circuit board, and

wherein the unitary housing directly contacts the cover glass and directly contacts the optical element.

2. The camera according to claim 1, wherein at least one active circuit is a digital image capturing unit.

3. The camera according to claim 2, wherein the digital image capturing unit and the at least one heating element are provided together on one of the circuit boards of the group of circuit boards.

4. The camera according to claim 1, wherein at least one active circuit is adapted to transfer video data to a display unit.

5. The camera according to claim 1, wherein at least one active circuit is adapted to process video data.

6. The camera according to claim 1, wherein at least one active circuit is an electrical power source.

7. The camera according to claim 1, wherein at least one heating element is mounted to a side of a circuit board of the group of circuit boards, which side is facing away from the optical element.

8. The camera according to claim 1, wherein at least one heating element is mounted to a side of a circuit board of the group of circuit boards, which side is facing the optical element.

9. The camera according to claim 1, wherein at least one heat conducting element is directly disposed between a circuit board of the group of circuit boards and the unitary housing.

10. The camera according to claim 1, wherein at least one heat conducting element is directly disposed between at least one heating element and the unitary housing.

11. The camera according to claim 1, wherein the at least one heat conducting element is a heat conductive adhesive, a thermal paste and/or a heat conducting pad.

12. The camera according to claim 1, wherein at least one heating element is directly attached to a circuit board of the group of circuit boards by means of a resistor layer.

13. The camera according to claim 1, further comprising:

a temperature sensor disposed within the unitary housing and configured to detect a temperature within the unitary housing; and

a control unit for controlling the at least one heating element in relation to the temperature detected by the temperature sensor.

14. The camera according to claim 1, wherein the at least one heating element is a heating element dependent on the temperature within the unitary housing, whose heating performance is dependent on the temperature within the unitary housing.

15. The camera according to claim 1, wherein at least one of the heat conducting elements directly contacts the at least one circuit board and directly contacts the unitary housing.

16. The camera according to claim 1, wherein the optical element comprises a lens that is screwed into the housing at an inner portion of the housing.

17. The camera according to claim 1, wherein the cover glass is positioned to be spaced from the at least one optical element.

18. A camera for use on vehicles, comprising:

a unitary housing;

at least one optical element disposed within and in contact with the unitary housing;

at least one group of circuit boards disposed within the unitary housing and including at least one circuit board, the at least one group of circuit boards having at least one active circuit for executing a direct camera function;

at least one heating element arranged and adapted to heat the group of circuit boards, the optical element and/or the unitary housing, the at least one heating element being directly attached to one of the circuit boards of the group of circuit boards;

at least one heat conducting element disposed between the at least one heating element and the unitary housing and adapted to transfer the heat of the heating element and/or the group of circuit boards to the unitary housing;

a cover glass configured to seal the unitary housing,

wherein the at least one heat conducting element directly contacts the unitary housing and at least one of the at least one circuit board and the heating element, and

wherein the unitary housing directly contacts the cover glass and directly contacts the optical element.

19. The camera according to claim 18, wherein the optical element comprises a lens that is screwed into the housing at an inner portion of the housing.

20. The camera according to claim 18, wherein the cover glass is positioned to spaced from the at least one optical element.