Abstract: A new light apparatus (such as LED lamps) and lamp caps (30) for connecting the light apparatus to corresponding lighting fixtures for operation at higher voltages with existing lighting fixtures, by using modified caps (30) comprising groove/gap (32) patterns in the insulating materials of the caps (30). The new and/or improved lighting sources/light tubes operating at a higher voltage using the same interface caps (30) may require a larger minimum creepage distance between power coupling electrodes/pins (22a,22b). This can be accomplished by adding one or more grooves or gaps (32) of predefined dimensions in the electrically insulating materials on surface of cap (30) in a vicinity of the at least two conductive elements/electric pins (22a,22b). The light apparatus utilizing a same or a different lighting technology but operating at a higher operating voltage than the original/legacy light apparatus.

Abstract: A lamp is disclosed, which comprises a tubular, an elongate and two end-caps, wherein the tubular body comprises two ends of the tubular body; the elongate light source board is inside the tubular body along a longitudinal direction thereof, and the elongate light source board comprises at least one light source arranged thereon and two ends of the elongate light source board; two end-caps are adapted to seal the two ends of the tubular body respectively, and at least one end-cap is slidingly connected to one of the two ends of the tubular body and fixedly connected to one of the two ends of the elongate light source board. The lamp of the present disclosure can be adapted to temperature changes, and can avoid an overall length variation, and/or a bending deformation in appearance.

Abstract: A lamp is disclosed, which comprises a tubular, an elongate and two end-caps, wherein the tubular body comprises two ends of the tubular body; the elongate light source board is inside the tubular body along a longitudinal direction thereof, and the elongate light source board comprises at least one light source arranged thereon and two ends of the elongate light source board; two end-caps are adapted to seal the two ends of the tubular body respectively, and at least one end-cap is slidingly connected to one of the two ends of the tubular body and fixedly connected to one of the two ends of the elongate light source board. The lamp of the present disclosure can be adapted to temperature changes, and can avoid an overall length variation, and/or a bending deformation in appearance.