Long field lamp

A long field lamp having a channel-like housing containing a fluorescent lamp ballast and mount holders including electrical wiring, a U-shaped cross-section of the housing being inwardly formed in a hooked edge-shaped fashion, whereby the mount holders fastened to a floor of the housing on opposite sides project with their mounts through the housing for accepting a fluorescent tube located outside the housing, and whereby the housing is terminated at its upper side with a cover track and is terminated at its narrow sides with end parts adapted thereto, comprising:

• the end parts at their upper side and adjacent narrow sides of the cover track having plug-in ledges directed parallel to the cover track, the plug-in ledges of the end parts plugged onto the narrow sides of the cover track to form a ceiling installation frame for the housing which can be placed therein from below and which is latchably held by the end parts, the ceiling installation frame, in a region of the plug-in ledge of the end part accepting one end of the cover track respectively, having a screw opening for ceiling installation of the ceiling installation frame;
• and
• the plug-in ledge of the end part being divided into two halves by a centrally arranged keyhole-like shaping, and each half being composed of a retaining plate with spacer webs located on an upper side of the retaining plate and a supporting bar provided under the retaining plate at a distance corresponding to the thickness of the cover track and extending approximately across the length of the retaining plate.

A long field lamp having a channel-like housing containing a fluorescent lamp ballast and mount holders including electrical wiring, a U-shaped cross-section of the housing being inwardly formed in a hooked edge-shaped fashion, whereby the mount holders fastened to a floor of the housing and project with mounts through the housing for accepting a fluorescent tube located outside the housing, and whereby the housing is terminated at its upper side with a cover track and is terminated at its narrow sides with end parts adapted thereto, each of said end parts comprising:

• plug-in ledges on an upper side of the end part and positioned parallel to the cover track for plugging onto narrow sides of the cover track to form a ceiling installation frame for the housing, the housing engaging the ceiling installation frame from below and being latchably held by the end parts;
• the ceiling installation frame having a means for providing a ceiling installation of the ceiling installation frame in a region of the plug-in ledge of the end part;
• and
• the plug-in ledge of the end part being divided into two halves by a centrally arranged keyhole-like shaping, and each half being composed of a retaining plate and a supporting bar provided under the retaining plate at a distance corresponding to the thickness of the cover track and extending approximately across the length of the retaining plate.