Ledvance Gmbh

Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Ag

Bernd Pilhoefer

Klaus Eckert

Florian Wagner

Thomas Bittmann

Ruediger Diekmann

Tobias Frost

Lambert Frye

Patrick Kotal

Reinhold Schmidt

Georg Scheipl

Andreas Engel

Klaus Lemdche

A light fixture includes a light-permeable tube with an end cap pushed onto a free end of the tube, a light module arranged inside the tube and a driver device at least partially received in the tube for driving the light module, wherein the tube has a substantially constant external diameter over its entire longitudinal extent.

Cementing endcap onto straight glass tubes

A light fixture and a method of making a light fixture include a light-permeable tube, at least one end cap pushed onto a free end of the tube for closure, and a driver device received at least partially in the tube and held in the tube by the end cap for driving a light module arranged in the tube. The end cap is fastened on the tube by an expanded adhesive and the driver device is fastened to the end cap or to the tube by the expanded adhesive.

Driver fixation with cement for LED tubes

A light fixture includes a light-emitting diode chip, a driver electronic, a first circuit board and a second circuit board, wherein the light-emitting diode chip is mounted on one of the two circuit boards and the driver electronic is mounted on the other one of the two circuit boards and a first conductive track of the first circuit board and a second conductive track of the second circuit board are connected electrically to one another with a spring contact.

Electrical connection of PCBs by clamp spring connector

A lamp includes a base with at least two electrical connecting elements. A bulb is rotatably mounted relative to the base. A light engine is arranged in the bulb with at least one light-emitting element and an electrically conductive substrate on which the light-emitting element is arranged. An electronic driver is connected to the electrically conductive substrate for activation of the light-emitting element. The base has a base sleeve in which the electronic driver is arranged. The electrically conductive substrate has a flexible connecting section between the electronic driver and the light-emitting element.

Rotateable endcap / base for tube lamps

Fluorescent lamp

The invention relates to a method for capping an electric lamp which has a lamp cap with at least one thermoplastic synthetic cap part ( ). In particular, the invention relates to a method for cementless capping of a compact fluorescent lamp. According to the invention, the lamp vessel ( ) is sealed with the aid of the thermoplastic synthetic cap part ( ) by heating sections ( ) of the lamp vessel ( ) above the softening point and preferably above the melting point of the thermoplastic, and introducing them into constricted cutouts ( ) in the thermoplastic synthetic cap part ( ). The heated lamp vessel sections ( ) soften or melt and displace the synthetic material in the region of the constricted cutouts ( ). The lamp vessel ( ) is embedded in the set synthetic in a self-closed fashion after the polymer melt has been allowed to set.

Method for mounting the base of an electric lamp

Growing community of inventors

Graben, Germany

Bernd Pilhoefer