HEATING DEVICE FOR HEATING A GLASS SURFACE, PARTICULARLY A PROTECTICE GLASS OF AN OUTDOOR CAMERA, AND ELECTRONIC AND/OR OPTICAL DEVICE HAVING A PROTECTIVE GLASS

• US 20110115972A1
• Filed: 06/10/2009
• Published: 05/19/2011
• Est. Priority Date: 07/16/2008
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Voges, Axel
• Application Number:
  US12/737,455
• Publication Number:
  US 20110115972A1
• Time in Patent Office: Days
• US Class Current: 348/373
• CPC Class Codes: G03B 11/00 Filters or other obturators specially adapted for photographic purposes
• 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: H05B 2203/002 Heaters using a particular layout for the resistive material or resistive elements
• CPC Class Codes: H05B 2214/04 Heating means manufactured by using nanotechnology
• CPC Class Codes: H05B 3/84 Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields

Abstract

At least one heating element is applied to a glass surface as a material layer to provide a heating device for heating the glass surface. Due to such direct heating of the glass surface, such as a protective glass, in that the material layer applied in a positive, bonded and non-positive manner, the energy input necessary for heating is low, and the heating is carried out in a uniform manner free of interferences.

Claims

1-15. -15. (canceled)

16. A heating device for heating a glass surface, comprising:

at least two electrical contact elements formed from metallic foil strips; and

a heating element applied to the glass surface as a material layer, formed from carbon nanotubes and being transparent, connected to the at least two electrical contact elements.

17. The heating device as claimed in claim 16, wherein the glass surface is a protective glass of an optical and/or electronic device.

18. The heating device as claimed in claim 17, wherein the optical and/or electronic device is an outdoor camera.

19. The heating device as claimed in claim 17, wherein the material layer is applied to at least one face of the protective glass in a positive, bonded and/or non-positive fashion.

20. The heating device as claimed in claim 19, wherein the material layer is applied as a homogeneous layer.

21. The heating device as claimed in claim 20, wherein the material layer is formed from a conductive material.

22. The heating device as claimed in claim 21, wherein the material layer is formed at least partially from indium tin oxide.

23. The heating device as claimed in claim 22, wherein the material layer is applied with a thickness from 100 nm to 1000 nm, for example approximately 300 nm.

24. The heating device as claimed in claim 23, wherein the material layer is approximately 300 nm thick.

25. The heating device as claimed in claim 23, wherein the material layer has a high color fidelity.

26. The heating device as claimed in claim 25, wherein the material layer covers at least a subregion of at least one face of the glass surface.

27. The heating device as claimed in claim 26, wherein the material layer completely covers at least one face of the glass surface.

28. The heating device as claimed in claim 27, wherein the electrical contact elements are formed from copper foil.

29. The heating device as claimed in claim 28, wherein the electrical contact elements are applied to the material layer with the aid of electrically conductive adhesive.

30. The heating device as claimed in claim 20, wherein the material layer is a surface resistance.

31. A monitoring unit, comprising:

an optical and/or electronic device with a protective glass; and

a heating device heating the protective glass when supplied with electrical power, including

at least two electrical contact elements formed from metallic foil strips; and

a heating element applied to the protective glass as a material layer, formed from carbon nanotubes and being transparent, connected to the at least two electrical contact elements.

32. The monitoring unit as claimed in claim 31, wherein the monitoring unit is a traffic monitoring camera.