| 摘要 |
An advertising aid consists of a box with an upper lid/cover 15 which is releasably fastened to the box and which is at least partially transparent. Elements within the box retain a laminar insert 21 adjacent to the lid or cover. An illuminating lamp 12 provided within the box illuminates the underside of the inserts. The insert may be an advertisement and the box may be mounted in the ground or floor so that the upper lid or cover is flush with the ground or floor. The box may be provided with an inwardly directed support flange 14, the lid/cover 15 being releasably fastened to the flange by elements 16. A seal 17 may be provided between the lid/cover and flange 14. Optical diffuser 11 may be provided above the lamps 12.
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