Lighting device, streetlighting device, traffic light, and fabrication method
A lighting device includes a base, a transparent cover, an electronic circuit mounted to the base, and an antenna. The electronic circuit is connectable with a light emitting element adapted to emit a light through the transparent cover and/or a light receiving element adapted to receive a light through the transparent cover. The antenna has a radiating patch following a contour of an inner surface of the transparent cover and connected to the electronic circuit.
1. A lighting device, comprising:
a base;
a transparent cover through which a light is emitted and/or received;
an electronic circuit mounted to the base;
a first antenna having a radiating patch following a contour of an inner surface of the transparent cover and connected to the electronic circuit; and
a second antenna following the contour of the inner surface of the transparent cover and operable to transmit and/or receive different types of signals than the first antenna.
2. The lighting device of claim 1 , wherein the radiating patch of the first antenna is arranged in a region where the light is emitted during operation of the lighting device.
3. The lighting device of claim 1 , wherein a first electronic component is arranged on a first surface of the electronic circuit.
4. The lighting device of claim 1 , further comprising a sealing ring arranged around an opening of the base and sealing a closed space between the base and the transparent cover.
5. The lighting device of claim 1 , wherein the first antenna is a planar inverted-F antenna.
6. The lighting device of claim 1 , wherein the first antenna is a coil.
7. The lighting device of claim 1 , wherein the first antenna is a cellular antenna.
8. The lighting device of claim 1 , wherein the first antenna is a long range antenna.
9. A luminaire, comprising:
a lighting device including a base, a transparent cover, an electronic circuit mounted to the base, a first antenna having a radiating patch following a contour of an inner surface of the transparent cover and connected to the electronic circuit, and a second antenna following the contour of the inner surface of the transparent cover and operable to transmit and/or receive different types of signals than the first antenna.
10. A streetlighting unit, comprising:
a lighting device including a base, a transparent cover, an electronic circuit mounted to the base, a first antenna having a radiating patch following a contour of an inner surface of the transparent cover and connected to the electronic circuit, and a second antenna following the contour of the inner surface of the transparent cover and operable to transmit and/or receive different types of signals than the first antenna.
11. A traffic light system, comprising:
a lighting device including a base, a transparent cover, an electronic circuit mounted to the base, a first antenna having a radiating patch following a contour of an inner surface of the transparent cover and connected to the electronic circuit, and a second antenna following the contour of the inner surface of the transparent cover and operable to transmit and/or receive different types of signals than the first antenna.
12. A method of fabricating a lighting device, comprising:
printing a radiating patch of each of a first antenna and a second antenna at an inner side of a transparent cover, the first antenna and the second antenna operable to transmit and/or receive different types of signals; and
fitting the transparent cover on a base to form an enclosed space.
13. The method of claim 12 , wherein the printing is performed by a jetting process.
14. The method of claim 13 , further comprising mounting an electronic circuit to the base.
15. The method of claim 14 , wherein the fitting of the transparent cover on the base forms a connection between the radiating patch of each of the first antenna and the second antenna and the electronic circuit.