Patent · US Expired

Illumination device for a front panel

US4800466A · kind A · utility

30Cited by

3References

20Claims

0Family size

Assignee

Preh, Elektrofeinmechanische Werke Jakob Preh, Nachf. GmbH & Co. · DE

Inventors

Karl-Heinz Bauer · Graben-Neudorf, DE
Gerold Eckert · Bad Neustadt an der Saale, DE
Rudiger Maidhof · Bad Neustadt an der Saale, DE

Key dates

Filing date	May 3, 1988
Grant date	Jan 24, 1989
Priority date	—
Expiry date	May 3, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/2084
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An illumination device for a front panel with illuminated areas, the latter eing illuminated by an incandescent lamp sitting in a connection base located behind the front panel through at least one light guide. The connection base is placed behind the front panel so that the incandescent lamp points away from the cover member. The lamp extends behind the front panel to the light guides. To make the incandescent lamp easily replaceable without loss of light, a cover member is removably attached to the illumination device such that removal of the cover member permits ready access to the incandescent lamp/connection base.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.