Information presentation device

1. An information presentation device for erecting a display sheet from a housing comprising:

an elongate housing having two opposed end walls and a first opening extending longitudinally between said end walls;

a drum having an outer surface, said drum extending about a longitudinal axis and mounted in supports at said end walls for rotation in said housing between said end walls such that said longitudinal axis is substantially parallel to said first opening in said housing; and

attachment means for attaching said display sheet to said drum such that said display sheet can be wound around said drum, said attachment means comprising:

an attachment strip for attachment to one end of said display sheet, and

receiving means on said drum for releasably engaging said attachment strip;

said attachment strip and said receiving means forming a releasable mechanical connection;

said drum is provided with a biasing spring such that when said display sheet is attached to said drum, said display sheet can be drawn into said housing under an action of the biasing spring;

wherein said attachment means is configured such

that said releasable mechanical connection forms abutment surfaces between the attachment strip and the drum forming a positive stop, said mechanical connection being releasable while said drum remains mounted in supports for rotation between said end walls within said elongate housing.

2. The information presentation device as claimed in claim 1 , wherein the releasable mechanical connection is a male/female joint in which said attachment strip comprises the male component of the joint.

3. The information presentation device as claimed in claim 2 , wherein said receiving means on said drum is a longitudinally extending slot.

4. The information presentation device as claimed in claim 3 , wherein said outer surface of said drum comprises a recessed arcuate portion at least partially delimiting one edge of said longitudinally extending slot in said drum, and in that said attachment strip has an arcuate portion which, when said attachment strip is engaged in said longitudinally extending slot, overlies said recessed arcuate portion.

5. The information presentation device as claimed in claim 4 , wherein said attachment strip comprises a longitudinally extending shoulder, said shoulder being adapted to abut said one edge of said longitudinally extending slot in said drum when said display sheet is erected.

6. The information presentation device as claimed in claim 1 , wherein said drum is spring-biased such that when a display sheet is attached to said drum, said display sheet is drawn into said housing, said spring biasing being adjustable by means of a tensioning device accessible from outside the housing.

7. The information presentation device as claimed in claim 1 , wherein said drum is provided with positioning means, said positioning means being accessible from outside the housing to effect alignment of the receiving means on said drum with either said first opening or said insertion opening.

8. The information presentation device as claimed in claim 1 , wherein said drum is provided with locking means accessible from outside the housing to effect locking of the drum when a display sheet is substantially fully unwound from said drum.

9. A method of mounting a display sheet to an information presentation device, said device comprising:

an elongate housing having two opposed end walls and a first opening extending longitudinally between said end walls;

a spring-biased drum extending about a longitudinal axis and mounted for rotation in said housing between said end walls such that said longitudinal axis is substantially parallel to said first opening in said housing;

attachment means for attaching a display sheet to said drum such that said display sheet can be wound around said drum, said attachment means comprising:

an attachment strip attached to one end of said display sheet, and

receiving means on said drum for releasably engaging said attachment strip, said attachment strip and said receiving means forming a releasable mechanical connection, said releasable mechanical connection forming abutment surfaces between said attachment strip and said drum forming a positive stop;

said method comprising the steps of:

bringing said receiving means on said drum into alignment with said first opening in said elongate housing;

inserting said attachment strip through said elongate opening in a direction substantially perpendicular to said longitudinal axis such that said attachment strip is brought into engagement with said receiving means on said drum while said drum remains mounted for rotation between said end walls;

winding said display sheet around said drum; and

tensioning said spring-biased drum such that said drum tends to retain said display sheet in said housing.

10. A method of mounting a display sheet to an information presentation device, said device comprising:

an elongate housing having two opposed end walls and a first opening extending longitudinally between said end walls;

a pretensioned spring-biased drum extending about a longitudinal axis and mounted for rotation in said housing between said end walls such that said longitudinal axis is substantially parallel to said first opening in said housing;

attachment means for attacking a display sheet to said drum such that said display sheet can be wound around said drum, said attachment means comprising:

an attachment strip attached to one end of said display sheet, and

receiving means on said drum for releasably engaging said attachment strip

said attachment strip and said receiving means forming a releasable mechanical connection, said releasable mechanical connection forms

abutment surfaces between the attachment strip and the drum forming a positive stop; and

locking means for locking said pretensioned spring-biased drum such that said receiving means on said drum is aligned with said first opening in said housing; said method comprising the steps of:

inserting said attachment strip through said first opening in a direction substantially perpendicular to said longitudinal axis such that said attachment strip is brought into engagement with said receiving means on said drum while said drum remains mounted for rotation between said end walls; and

releasing said locking means such that said display sheet is caused to be wound around said drum.