Electrically heated optoelectronic device for detecting moisture on a transparent pane

US5639393A · kind A · utility

Assignee

• Leopold KOSTAL GmbH & Co. KG · DE

Inventors

• Christian Veltum · Iserlohn, DE
• Jurgen Levers · Dortmund, DE
• Berthold Esders · Schalksmühle, DE

Key dates

• Filing date: Dec 12, 1994
• Grant date: Jun 17, 1997
• Expiry date: Dec 12, 2014

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60S1/0822
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An optoelectronic sensor device which has a beam transmitter/beam receiver arrangement associated with a beam guide element. The arrangement is disposed together with a heating device in a common housing. In order to install the heating device in a convenient manner in the surrounding area of the sensor device, the heating device consists of at least one heat conducting plate fixed to a support part, which is allocated with its substantial main areas to the beam guide element and is connected by at least one connection arm to the electrical printed circuit board. The heating device includes at least one heating element, which is disposed in the proximity of a connection arm directly on the electrical printed circuit board. For communicating the necessary heat into the heat conducting plate, the printed circuit board is connected at least in a material-locking manner to an associated connection arm.