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US 8,264,133 B2Granted
Incandescence lamp with a reinforcement rib
AssigneeUshio Denki Kabushiki Kaisha
InventorsKoichi Takegoshi, Kazuyuki Ikushima, Tadakazu Kawamura
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Abstract
An incandescence lamp comprises an arc tube where both ends form sealing portions, a filament that extends in the arc tube in a tube axis direction, and a reinforcement rib that extends along the arc tube in the tube axis direction.
Claims5
An incandescence lamp comprising:
- a tube that has sealing portions forming both ends;
- a filament that extends in the tube in a tube axis direction;
- an internal lead that is connected to the filament;
- and
- a reinforcement rib on the tube that extends along the tube axis direction;
- wherein a thickness of the tube is 0.85 mm or less;
- and
- wherein the reinforcement rib is formed on the tube at a location radially adjacent to the internal lead and is not formed on the tube at another location radially adjacent the filament.
5 more elements
An incandescence lamp unit comprising two or more incandescence lamps, each incandescence lamp comprises a tube and a reinforcement rib;
- wherein the tube comprises sealing portions forming both ends, at least one filament extending in a tube axis direction and an internal lead connected to the filament;
- wherein a thickness of the tube is 0.85 mm or less;
- wherein the at least one filament of a first incandescence lamp is shifted in the tube axis direction relative to the at least one filament of a second incandescence lamp;
- and
- further wherein the reinforcement rib extends along the tube axis direction and is formed corresponding to a location of the internal lead;
- and
- wherein the reinforcement rib is formed on the tube at a location radially adjacent to the internal lead and is not formed on the tube at another location radially adjacent to the filament.
4 more elements
Dependencies are inferred from the claim text.