| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize a radio service by making an available area of the radio service almost in matching with an area lighted by a lighting device so as to allow the user to easily discriminate a current position of itself. SOLUTION: A lighting device integrated with antenna 1 is provided with a base 2, a radio communication service antenna 3, a fluorescent light 4 as a lighting device, and a nearly semispherical case 5, and is fitted to an upper part of a support 6 used for a street lamp. The antenna 3 has a prescribed directivity, and the available area of the radio service, the available area of the radio service depending on the directivity of the radio service is nearly in matching with an area lighted by the fluorescent light 4. As a result, the user receives the distribution service of road traffic information or the like in the area lighted by the fluorescent light 4. |
