[0001] The present invention relates to display apparatus for mounting advertisements and
the like on vehicles, by which it is possible, due to its special characteristics,
to achieve wide diffusion of the message and object which constitute the advertising
element.
[0002] It is traditional to advertise on public roads using advertising hoardings, which
has the disadvantage that the advertisement is static so achieving only a limited
audience.
[0003] It is also known to mount advertisements on vehicles although the apparatus used
is designed solely to fix or mount an object or advertising boarding of the vehicle,
generally on the roof or on one side of the bodywork of the vehicle. However, although
there is much wider exposure to the public, as compared with stationary hoardings,
there is no greater appeal to attract the attention of the public.
[0004] One object of the present invention is to provide display apparatus that has a greater
impact than vehicle mounted conventional displays. To this end we now propose display
apparatus that is designed such that when the vehicle on which the apparatus is mounted
moves, the display will also move relative to the vehicle without the need for any
external drive mechanism.
[0005] According to the present invention, display apparatus for mounting on vehicles comprises
a support for attachment to the roof of a vehicle, and a plate rotatably mounted on
the support and carrying an eccentric mass, the plate also comprising means for attachment
of a display or a mounting therefor.
[0006] Another advantage of the structure according to the invention, lies in its simple
constitution and operation, with no need for connection to any motive means in order
to achieve movement of the advertising support.
[0007] In a preferred embodiment, the apparatus comprising a support which can be fixed
to the roof of the vehicle, a horizontal circular tray mounted on the support and
a circular plate mounted on the tray and capable of rotating freely.
[0008] The support comprises means for attachment to the roof of the vehicle consisting,
for example, of clamps which can be fixed to the gutters, suction cups, screws etc.
The top of the support defines a flat horizontal platform on which the tray bears
and is fixed. The platform should preferably be circular in shape, and supported by
an encircling generally frustoconical wall, terminated in four salient portions angularly
spaced from one another by an angle of 90° in order to define legs on which are disposed
the clamps or means for attachment to the roof of the vehicle. In addition, this support
may be reinforced underneath by diagonal bars extending between the aforesaid four
arms.
[0009] With regard to the rotating plate, this is mounted by bearing means on a central
axle which is rigid with the s support and passes through the bottom of the tray.
This circular rotating plate carries the eccentric mass which acts as a counterweight
by means of which, due to the acceleration of decelerations of the vehicle while it
is travelling, or due to bumping or swaying due to irregularities in the road surface,
a rotary movement is imparted to the plate in one direction or the other and varying
in amplitude.
[0010] The aforesaid plate is, in addition, provided with means for attachment of one or
more advertisements or the like which thus moves with the plate.
[0011] The apparatus of the invention enables wide exposure depending on the distance over
which the vehicle travels, and in addition considerable appeal to members of the public
by virtue of the constant movement of the advertising support while the vehicle is
travelling.
[0012] The tray which is mounted on the support acts as a protective element, having a peripheral
wall inside which the rotating plate is accommodated.
[0013] The axle on which the plate is mounted is integral with the support, passing through
the bottom of the tray.
[0014] Between the bottom of the tray and the rotating plate, it is possible to provide
a disc fixed to the bottom of the tray and having a surface which presents reduced
friction to the rotating plate, the reduced friction feature being assured by the
nature of the disc or by the provision of a lubricant.
[0015] If the platform of the support is made sufficiently deep, the tray may be formed
in the support. For example, a cylindrical cavity may be formed therein to accommodate
the plate and disc.
[0016] The shaft on which the tray is mounted can be fixed to the support in any manner.
The rotating plate is mounted on the shaft by means of a ball or other type of bearing
and secured by a top nut or in any other convenient manner.
[0017] One embodiment of the invention will now be described by way of example with reference
to the accompanying drawings in which:
Figure 1 is an exploded side view of vehicle mounted advertising apparatus;
Figure 2 is a plan view of a support shown in Figure 1;
Figure 3 is a plan view of a rotatable plate shown in Figure 1; and
Figure 4 is a side view of a shaft or axle by which the rotating plate of Figure 3
is mounted.
[0018] As can be seen in Figure 1, the apparatus comprises a support 1, provided with means
2 for its attachment to the roof of a vehicle such that the top of the support 1 defines
a flat horizontal platform 3 on which is mounted a circular tray 4, fixed to the support
1. Inside the tray 4 is housed a thin disc 5 and above the disc 5 a rotatable plate
6. A locating boss 7 fits through coaxial apertures in the disc 5 and the bottom of
the tray 4 to seat in a recess 8 formed in the support 1. The boss 7 has a peripheral
flange 8 which engages the upper side of the disc 5 to hold it in position. Projecting
upwardly from the boss 7, above the peripheral flange 8 is an axle 9 on which the
rotatable plate 6 is mounted by means of a bearing 10, the whole assembly being secured
by a nut 11 which is screwed into the end 21 of the axle 9.
[0019] The tray 4 may be secured to the support 1 to prevent relative rotation, for example
by nuts, by an external projection 12 formed in the bottom of the tray 4 and engaging
in a recess 13 in the platform 3 of the support 1, or in any convenient manner.
[0020] Relative rotation of the disc 5 and the tray 4 may be prevented in a similar manner.
In the illustrated embodiment, the disc 5 has on its underside a projection 14 that
fits into a recess in the bottom of the tray 4.
[0021] Figure 2 shows more clearly the platform 3 of the support, the central cylindrical
housing 8 and the recess 13 for receiving the projection 12 of the tray 4. Around
the platform 3 is a frustoconical wall which defines four projecting arms 15 angularly
spaced at 90° from one another, on which are provided the means 2 for attachment of
the assembly to the roof of a vehicle. The support 1 may in addition comprise diagonal
rods 16 which extend underneath the platform 3, beneath the arms 15 and serve as strengthening
and reinforcing elements.
[0022] Figure 3 shows to a larger scale, a plan view of the rotatable plate 6 which is hollow
and may be formed by uppper and lower discs connected together by spacing elements.
An eccentric mass 17 disposed in the hollow plate, serves as a counterweight. The
magnitude of this mass and the angular amplitude occupied thereby may vary. The rotatable
plate 6 also has on its upper side screw threaded holes 18 or other means by which
an advertising display or displays can be attached.
[0023] As can be seen in Figure 4, the locating boss 7 comprises also an extension piece
19 which is cube-shaped and which can be coupled to the cylindrical housing 8 of the
support 1. This cube 19 may have a diametral screwthread 20 matching orifices formed
in the wall of the cylindrical housing 8 in such a way as to receive a retaining pin
which serves as a locking element. Also the fixing of the shaft 7 to the support 1
can be achieved by means of nuts, welds, etc.
[0024] When the apparatus described above is mounted on the roof of a vehicle, then while
the vehicle is moving, whenever it undergoes acceleration or deceleration and whenever
it sways or bounces due to irregularities in the carriageway over which the vehicle
is travelling, the eccentric mass 17 on the plate 6 causes the plate to rotate in
one direction or another, the angular amplitude of the movement being variable.
[0025] The advertisement or support therefor, which is mounted on the rotating plate 6 will
be propelled by the same movement, thus achieving greater attraction and therefore
greater advertising impact.
[0026] The tray 4 which acts as a protective carcase for the disc 5 and the rotatable plate
6 may be eliminated, but in such a case it is preferable to form in the platform 3
of the support a circular depression which is sufficiently large to accommodate the
plate 6.
[0027] Also between the rotatable plate 6 and the fixed surface situated immediately underneath
it, whether it is the disc 5 or the bottom of the tray 4, friction-reducing elements
for example, balls, may be interposed to avoid possible pitching of the plate and
in order to facilitate its rotation. The same effect can be achieved if the disc 5
is made from a material with a low coefficient of friction in respect of the said
plate or by disposing a lubricant on the upper surface of the disc 5.
1. Display apparatus for mounting on vehicles, comprising a support for attachment
to the roof of a vehicle, and a plate rotatably mounted on the support and carrying
an eccentric mass, and plate also comprising means for attachment of a display or
a mounting therefor.
2. Apparatus according to claim 1, wherein the support defines a platform supported
by a generally frustoconical wall terminating in four equally angularly spaced projections
or legs on which are mounted clamps or other means for attachment to the roof of a
vehicle.
3. Apparatus according to claim 2, wherein the rotatable plate is mounted on a tray
formed in or fixed to the platform of the support.
4. Apparatus according to claim 1, wherein between the bottom of the tray and the
rotatable plate is a disc which is fixed to the bottom of the tray.
5. Apparatus according to any preceding claim, characterised in that the disc and
bottom of the tray have co-axial apertures through which passes an axle carrying the
rotatable plate and rigid with the support, the tray comprising a wall surrounding
the periphery of the disc and plate.