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 This application of a continuation of previously filed PCT applciation Ser. No. PCT/DE99103288, filed Oct. 11, 1999 which prior application was published in the German language on May 11, 2000.
 The invention relates to a seat, in particular a bucket seat, having a seating surface and a backrest surface.
 Such seats are becoming increasingly widespread in public facilities and buildings. In particular, bucket seats have been found to be comfortable and durable seats at big events. Bucket seats thus are increasingly being installed in soccer and football stadiums. The seat is ergonomically adapted to the seated posture that a person assumes when sitting in a relaxed manner. Despite this adaptation to a relaxed manner of sitting, the bucket seat is comparatively cheap to manufacture and assemble. In addition, it takes up relatively little space, so that the seats follow one another in close order. These seats hitherto have been made primarily of synthetic materials. They may vary in color, and an inviting mood is created by an aptly selected color combination. In addition, units, for example in blocks of seats, can be made recognizable by selection of the same color. However, thus far no effort has ever been made to exploit the large surfaces provided by seats for other purposes.
 Therefore, the object of the present invention is to improve the seat of the type mentioned at the beginning in such a way that the supply of surfaces provided by it is made commercially productive.
 According to the invention, this object is accomplished in that at least one of the two surfaces is designed as an advertising surface. This results in a considerable additional supply of advertising surface. Notice is taken of this surface by users of the seats and, specifically, in a state in which they are especially receptive. Regardless of where the seat is used, as a rule the user is in a state of leisure, in which an advertisement usually is unconsciously associated with the pleasant experience of this leisure time. In addition, the advertising surface may also be selectively associated with the place at which the seat is located. Thus, seats located in a sports stadium are especially suitable for the display of advertising for sporting goods or subsequent sports events.
 According to a preferred embodiment of the invention, the advertising surface is designed as a device for the replacement of advertising vehicles. In this way, the advertising surface can be used in various ways for advertising activities. As a result, on the one hand, the advertising needs of a plurality of advertisers can be taken into account and, on the other, variety can be provided for the seats installed. The respective users of the seat can be pleasantly surprised by the various advertisements that the seat offers on different occasions.
 According to another preferred embodiment of the invention, the device consists of replaceable advertising vehicles in a transparent plate, under which an advertising vehicle is fastened. In this way, the respective advertising vehicle can be secured against the wear and tear which is to be expected with varied use of the seat. Each user of the seat will find the advertising presented in each instance in a well preserved condition, so that it can give a good and favorable picture of the goods or services offered in each case.
 According to another preferred embodiment of the invention, a compartment suitable for accommodation of the advertising vehicle may be provided below the transparent plate in the line of sight. This compartment is reliably covered by the transparent plate, so that the advertising vehicle can be safely and considerately presented to the view of an interested person. In particular, care is taken to see that the advertising vehicle is optimally arranged in the compartment for the respective advertising purpose.
 According to another preferred embodiment of the invention, the compartment may be firmly connected with the plate. This ensures that no moisture can penetrate into the compartment and that the respective advertising vehicle cannot be stolen or removed from the compartment in some other unlawful way.
 According to another preferred embodiment of the invention, at least one part of the plate may be designed as a cover closing the compartment. In this way, the cover can easily be swung away from the plate, so that the compartment is readily accessible and the advertising vehicle can be optimally arranged in the compartment.
 According to another preferred embodiment of the invention, an advertising vehicle may be inserted into the seating surface as well as into the backrest surface. The advertising surface made available is thereby considerably increased as compared to arrangement of the advertising surface in the region of the seating surface alone. In addition, the seat as a whole also offers versatility in terms of advertising.
 According to another preferred embodiment of the invention, a common cover is provided for all compartments provided in the seating surface and in the backrest surface. This embodiment is especially suitable for those cases in which the entire advertising surface made available by the seat is needed by the same interested advertisers. In this case, rapid replacement and arrangement of the respective advertising means can be performed by swinging away the common cover. Additional particulars follow from the detailed description below and the accompanying drawings, in which a preferred embodiment of the invention is represented by way of example and wherein:
 A bucket seat (
 Both the seating surface (
 In addition, however, a space (
 In each case, the covers (
 In the case of connected advertising surfaces (
 The seal (
 The covers (
 To minimize sealing problems, the seating surface (
 After the doors (
 Another possibility for a watertight seal of the compartments (
 Instead of hinged covers (
 According to another embodiment, it is alternatively possible to design the device for the replacement of advertising vehicles (