Luminaire
First Claim
Patent Images
1. A luminaire, comprising:
- a power circuit that supplies power to a light source;
an antenna that at least one of transmits and receives a wireless signal; and
a metal housing that contains the antenna and the power circuit,wherein the metal housing has an opening,the antenna and the opening are arranged to cause a polarization plane of an electric wave most strongly radiated from the antenna and a polarization plane of an electric wave most strongly radiated from the opening to substantially coincide with each other,the antenna is substantially L-shaped,the antenna has a tip portion and a root portion, the root portion being substantially orthogonal to the tip portion and shorter than the tip portion, andthe polarization plane of the electric wave most strongly radiated from the antenna is parallel to the root portion.
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Abstract
A luminaire is provided that includes a power circuit that supplies power to a light source, an antenna that at least one of transmits and receives a wireless signal, and a metal housing that contains the antenna and the power circuit. The metal housing has an opening, such that the antenna and the opening are arranged to cause a polarization plane of an electric wave most strongly radiated from the antenna, and a polarization plane of an electric wave most strongly radiated from the opening, to substantially coincide with each other.
9 Citations
18 Claims
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1. A luminaire, comprising:
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a power circuit that supplies power to a light source; an antenna that at least one of transmits and receives a wireless signal; and a metal housing that contains the antenna and the power circuit, wherein the metal housing has an opening, the antenna and the opening are arranged to cause a polarization plane of an electric wave most strongly radiated from the antenna and a polarization plane of an electric wave most strongly radiated from the opening to substantially coincide with each other, the antenna is substantially L-shaped, the antenna has a tip portion and a root portion, the root portion being substantially orthogonal to the tip portion and shorter than the tip portion, and the polarization plane of the electric wave most strongly radiated from the antenna is parallel to the root portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification