with reference to fig1 there is shown a head support 1 which consists of a rigid member 2 and a harness 3 located or secured with said rigid member 2 . the rigid member 2 and harness 3 are adapted to be located to the user of the head support 1 such that when the user is standing upright and tilts his / her head backwards , there is a head rest region 9 of said rigid member 2 with which the tilted back head can contact and be provided with a vertical support thereby . it is to be noted that the head support 1 of the present invention may simply provide neck support for viewing above the horizontal rather than full vertical head support , without departing from the scope of some of the aspects of the present invention described in the specification . with reference to fig2 , 9 , 10 and 11 there is shown a user of the head support 1 with his head tilted backwards and a part of the head locating against a portion of the rigid member 2 to provide the user with a comfortable and vertical support for the head and / or neck . in reference to fig2 and 3 one form includes a harness 3 which is locatable about the upper body regions of a user of the present invention . the harness 3 is of a configuration which can provide at least vertical stability to the rigid member 2 . it is to be noted that the “ harness ” can also include a backpack without departing from the scope of the invention . in fig2 there is shown a harness 3 which consists of two shoulder straps 4 which are locatable over the shoulder and underneath the armpits to return back to a region of attachment 5 between the rigid member 2 and the harness 3 . the region of attachment is at or towards a lower distal end of the rigid member 2 . with reference to fig1 there is illustrated the shoulder straps 4 running from the region of attachment 5 to the rigid member 2 , over the shoulders under the arms and back towards the region of securement . it will be appreciated by a person skilled in the art that such shoulder straps 4 may be provided with buckles and / or adjustment means 6 to allow for the head support to be reconfigured relative to the body of the user or to allow users of different body shapes and sizes to use the particular head support . furthermore , as discussed the shoulder straps 4 may be those of a backpack . as indicated in fig2 , 3 , 6 and 7 the rigid member 2 is preferably made from a sheet material such as a moulded plastic , composite or metallic or non - metallic material . the rigid member 2 preferably consists of a vertically extending region 7 and an outwardly extending region 8 . the vertically extending region 7 is provided and adapted in association with the harness 3 to lie parallel to and in engagement with the back of a user of the head support 1 . preferably the vertically extending region 7 is of sufficient length to be pressed ( when said harness is engaged to the user ), against the back of the user to provide some stable support in respect of the user . the outwardly extending portion 8 of the rigid member 2 has a head rest 9 with which , when said head support 1 is in use , the tilted back head of a user can comfortably located . as indicated in fig6 and 7 , the outwardly extending portion 8 may be concave to allow engagement of the head as shown in fig3 and 4 . for comfort in the wearing of the head support 1 there is preferably provided a padded surface 10 on that side of the rigid member 2 which is to be in contact with the body of the user . fig4 shows an alternative configuration or an additional configuration to the harness 3 . to encourage the rigid means 2 to remain in stable and close contact with the back of a user a further portion of the harness 3 is provided to encompass the chest or waist of the user of the device . this chest band 11 may be attached to the shoulder straps 4 and / or be attached to the rigid member 2 . this chest band 11 may be provided with a buckle 6 and / or strap length adjusting means to allow a particular head support of the present invention to be adapted for use by different sized and shaped people . the harness preferably also includes a chest tie 60 which extends between the shoulder straps 4 across the chest region . the chest tie may be a webbing which includes an adjustment buckle to allow for the chest tie to be adjusted in length . the chest tie 60 allows for the shoulder straps to be drawn together and held together by the chest tie . this can be advantageous in providing more comfort to the wearer to prevent the shoulder straps from sitting with too much separation across the chest . this harness configuration or any harness configuration as shown herein may have application to alternative variations of the device as herein defined . for further support to the rigid means 2 of the present invention a lateral stabilizer may be rigidly attached or form part of the rigid member 2 . with reference to fig5 such a lateral stabilizer may for example be arms 20 which extend outwardly ( and preferably upwardly ) from a region of the rigid member 2 . preferably the region from which the lateral stabilizers 20 extend is a lower or lower most region of the rigid member 2 . the lateral stabilizers 20 are preferably made of a material similar to that of the rigid member 2 or may alternatively be made from any other material and which although preferably deformable , does have its own inherent rigidity . in the preferred form the lateral stabilizers locate at the distal ends with the shoulder straps 4 . the shoulder straps will tend to draw the lateral stabilizer to conform with the upper back and shoulder shape of the user of the present invention and hence in the preferred form such lateral stabilizers 20 are of a sheet material or strip wherein the plane of the sheet or strip is in a general parallel direction with the back of the user . such an orientation of the plane of the lateral stabilizers will allow for it to be conformed or at least in part contoured with the back of the user . preferably at the distal ends of the lateral stabilizer there is the provision of the slot 19 through which the shoulder straps 4 can extend while still allowing the distal ends of the lateral stabilizers 20 to have some association with said shoulder straps 4 . fig1 illustrates an alternative embodiment of the invention . shown is the head support 1 which includes the rigid member 2 , and the shoulder straps 4 of the harness . in this embodiment the head support 1 includes a head rest 9 preferably of a substantially arcuate form , providing further support towards the sides of the head of the user and not just the back of the head . the head support 9 also includes a padded surface 41 for comfort . fig1 further illustrates the use of a support or strut 42 as an extension of the rigid member 2 which holds and retains the rigid member 2 at a distance from the back of the user . in some situtations ( such as on medical or particularly orthopaedic advice ) it may be preferable for the rigid member 2 to have no contact with the user &# 39 ; s back . this embodiment is appropriate for such situations . fig1 also illustrates additional adjustment means 43 which may be employed to raise and lower the head rest 9 with respect to the head of the user . it is envisaged that a number of adjustment means may be employed individually or in combination in an embodiment according to the invention , without departing from the scope of the invention . such adjustment means may be used to raise and lower the head rest to alter the position of the head supporting region ( in respect of height , and tilt for example ). with reference to fig6 a there is shown a head support 1 which includes a rigid member 2 . in this example the rigid member 2 consists of a base portion or base pad 12 which has an extensile head rest carrying member 13 . the base pad 12 includes engagement regions 14 which allow for shoulder straps 4 to engage therewith . similar engagement regions may be provided to allow for a chest band to engage with the base pad 12 directly or to the shoulder straps . the shoulder straps 4 may be engaged to further padding 15 forming part of the harness 3 . the base pad 12 is preferably of a width ( w ) of at least 10 centimeters and preferably approximately 15 - 20 centimeters . such a substantial width for the base pad 12 helps for the rigid member 2 to gain stability from the back of a user . the base pad 12 can be pressed against the back of a user to obtain stability thereby reducing the possibility of rotation about the axis xx of the rigid member 2 . provided to the body contactable side ( opposite to the body contactable side as shown facing in fig6 a ) may be padding which allows for the base pad 12 to sit comfortably against the back of a user . the base pad 12 is preferably located by the harness 3 to be located at the upper back portion of the user . the base pad 12 preferably sits at the shoulder blade height of a wearer . the base pad preferably does not sit at the small of the back or at the base of the back but is presented for use at a much more elevated location on the body of a wearer . in the most preferred form the base pad is of a shape so as to straddle the spine . as such in the preferred form the base pad on the body proximate more side , is of a concave profile so as to accommodate the spine within the concave without the base pad engaging or pressing unduly onto the spine of the wearer . the base pad 12 provides support to the head rest carrying member 13 . the head rest carrying member 13 is in a movable disposition relative to the base pad 12 . in the most preferred form the head rest carrying member 13 is in a sliding engagement with the base pad 12 . such sliding engagement allows for the head rest carrying member 13 to move in a direction parallel to its longitudinal direction along or parallel axis xx . a slot or slots provided in the base pad 12 which are of a complimentary shape to at least part of a constant cross sectional shaped region of the head rest carrying member 13 allows for the head rest carrying member to slide along or parallel to the direction xx relative to the base pad 12 . the ability for the head rest carrying member 13 to move relative to the base pad 12 allows for the head rest 9 to be varied in height . the head rest 9 in this example is carried at the distal end of the head rest carrying member 13 and is presented to be engaged by the head of a user . to allow for convenient adjustment of the height of the head rest 9 to occur as a consequence of the movement of the head rest carrying member 13 , a ratchet like relationship is established between the base pad 12 and the head rest carrying member 13 . the ratchet arrangement consists of a ratchet surface 15 provided by the head rest carrying member 13 . the ratchet surface consists of a plurality of ratchet teeth which are ramped in one direction and are bluff in respect to the opposite direction ( i . e . a saw tooth like configuration ). a pawl 16 is provided carried by the base pad 12 . the pawl has a region 17 which can interact with the teeth of the ratchet surface 15 . this is for example shown in fig6 e where the pawl is in engagement with a bluff face of a ratchet tooth of the ratchet surface 15 . the pawl 17 is carried by a resiliently displaceable zone 18 of the base pad 12 . the resiliently flexible zone 18 of the base pad 12 allows for the pawl to move . such movement is in a direction to allow for the pawl to become disengaged from the ratchet surface 15 . a push or pressing on the appropriate portion of the zone 18 allows for the pawl 17 to displace away from the ratchet surface 15 thereby allowing the unfettered movement of the head rest carrying member 13 . the head rest carrying member 13 when the pawl has been displaced by pushing the zone 18 , can then slide in both the x and y direction as shown in fig6 d . the teeth of the ratchet surface 15 are presented so that when the pawl 17 is engaged with the ratchet surface , the pawl will prevent the movement of the head rest support member 13 in the direction z ( being a direction where the head rest 9 is lowered ). the ratchet surface however does allow for the movement of the head rest carrying member 13 in a direction y opposite to direction z without actively pressing the zone 18 to disengage the pawl 17 from the ratchet surface . this is as a result of the sloped surfaces of the ratchet surface . however it will be appreciated by a person skilled in the art that alternative surface configurations to the ratchet surface 15 may be provided to allow for an indexing to occur between the head rest carrying member 13 and the base pad 12 . such indexing may prevent movement in both directions in the absence of there being a pressing of the zone 18 to move the pawl 17 . indeed alternatively to the ratchet surface 15 , a series of rebates may be provided in a surface of the head rest carrying member 13 . these rebates may be square cut rebates into which a pawl can locate . for the ratchet version in use a person can raise the head rest 9 without needing to push the zone 18 . however the head rest cannot be moved downwards unless the zone 18 is pushed to disengage the pawl 17 from the ratchet surface . therefore a person who rests their head on the head rest 9 without pushing the zone 18 , will not displace the head rest 9 downwardly . to do so would require a pushing of the zone 18 . the zone 18 is defined as part of the base pad 12 so as to be resiliently movable . such resilient movement is to bias the pawl 17 towards a condition where it does engage the ratchet surface 15 . therefore a pushing of the zone 18 is in a direction opposite to the natural bias of the zone 18 . however the most important direction in which the movement of the head support is prevented by some form of mechanism is in the downward direction . it is in the downward direction that the application of a force from the head of the user will be applied to the device and it is against this force that the elongate member must provide resistance so as to provide support to the head . alternative mechanisms for locking in place and prevent the movement of the elongate member 13 in at least one direction may include a friction clamp 50 as for example shown in fig1 . a friction clamp 50 may be engaged to the base pad and allow for the sliding therethrough of at least part of the elongate member 13 . in the example shown in fig1 the elongate member is of a circular cross section and the friction clamp 50 has a bore therethrough of a complimentary shape . the friction claim 50 is of a kind as commonly used on bicycles to lock a seat post of a bicycle relative to the frame of a bicycle . it includes a toggle handle 51 which can move to contract and dilate the bore through the friction clamp 50 . in a contracted state the friction clamp will impart sufficient friction onto the elongate member 13 to lock it into position . in the most preferred form the mechanism for locking the movement of the elongate member 13 is of a quick release kind . whilst it is envisaged that a threaded rod engagement or a rack and pinion engagement may also be used , such arrangements are disadvantageous in that it can take a significantly long time to displace the elongate member in the longitudinal direction by such alternative mechanisms . the head support 1 as shown in fig6 a - c and in fig7 a and 7b , includes a head rest pad 10 . the head rest pad 10 is engaged to an outwardly extending region 8 of the head rest carrying member 13 . the outwardly extending region 8 of the head rest carrying member 13 extends outwardly from the body when the head support is in use . the elongate region of the head rest carrying member which is that portion slideably engaged with the base pad 12 , extends substantially parallel to the body of the user ( preferably parallel to the spine ). the outwardly extending region 8 may in part form part of the head rest 9 or be entirely the head rest 9 of the rigid member 2 . the outwardly extending region 8 presents a mount with which a pad 10 can be removeably engaged . the pad 10 may be made from a foam material to provide a certain degree of comfort to a user . the pad 10 may itself include a mounting base or substrate 23 to be contiguous with the outwardly extending region 8 at the head rest region 9 of the rigid member 2 . the substrate 23 and / or the outwardly extending region 8 may carry means to allow for the releasable engagement of the pad 10 with the outwardly extending region 8 . with reference to fig6 b and 6c , such means for engagement 24 are prongs which have clipping detail allowing for the prongs to be extended through apertures or into blind holes 25 of the rigid member 2 . these apertures 25 can receive the prongs 24 and with the clipping detail of the prongs allow for the prongs to securely fasten the pad 10 to the outwardly extending region 8 . the prongs are preferably of a resiliently movable kind so that they can be moved to a condition to allow for the pad 10 to be disengaged from the outwardly extending region 8 . the prongs may be made from a resilient plastics material . the apertures 24 are of a size to allow them to receive the prongs . the ability for a convenient removal of the head rest pad 10 allows for the head rest pad 10 to be quickly and simply changed . such change may be required due to the head rest pad 10 becoming dirty or for hygiene purposes or to allow for head rest pads of a different configuration to be presented for use . head rest pads of different configurations may be necessary where the device of the present invention is used for different applications . in some applications not just vertical support but also support against the rotation of the head may be desired . in such cases a head rest pad which extends not just for engagement against the back of the head but also about part of the side of the head can be useful . as such interchangeable head rest pads may be provided at points of retail . it will be appreciated by a person skilled in the art that many alternative forms of engagement of the head rest pad 10 with the outwardly extending region 8 can be provided . such may also include the use of a hook and loop fastening mechanism or the clipping of the head rest pad in part about the outwardly extending region 8 . alternatively , adhesives or ties may be used . in a slight variation to the removable head rest pad as herein described , the head rest pad of the kind so far described ( consisting largely of a foam pad ) may remain affixed to the head support portion but where a removable sock or cover can be used to be contiguous the head rest pad and the head of the user . the cover is then , that portion in contact with the head of a wearer . the cover may be made from the likes of a tissue material and can be conveniently removed such as by having a perimeter elastic provided to locate about the head rest . the cover can be conveniently removed for the purposes of hygiene and cleanliness . the head rest carrying member 13 of the rigid member 2 may also be included with bracing 26 . a brace or braces 26 are preferably engaged with the head rest carrying member 13 and extends to have distal ends 27 engaged at the shoulder straps . the braces 26 may be removable from the device . the distal ends 27 may also have means for attachment at different locations of the shoulder straps 4 . the purpose of the braces is to provide some resistance to the movement of the head rest outwardly away from the body . the braces to provide bracing to the rigid member to prevent the head rest from moving outwardly away from the body of a user , are preferably engaged to the head rest carrying member 13 or to the head rest itself . such engagement may be by a single brace passing through a fastening region of the head rest carrying member 13 ( e . g . through a loop defined therein or an aperture defined therein ) or alternatively the bracing may be of two pieces each piece extending in an opposite direction from the head rest carrying member 13 . the bracing extends away from the head rest carrying member 13 in a direction towards the anterior of the body and is engaged to or engageable to the shoulder straps at an anterior more disposed portion of the head support . the extending of the bracing from the rigid member toward the anterior portion of the shoulder straps allows for the bracing to present a resistance to the movement of the head support in a direction parallel to a direction extending from the anterior to the posterior portion of the body ( i . e . outwardly away from the body ). the bracing also extends in a direction outwardly away from the head rest carrying portion 13 in a direction away from the centre line of the head rest carrying portion ( i . e . along axis xx ). therefore the bracing can also provide some resistance to the movement of the head rest in or parallel to a plane which is parallel to the anterior and posterior planes of the body of a person . the bracing is preferably adjustable in length so that a single head rest unit can be used by different people of different shapes and sizes as well as allowing for any adjustment of the unit to occur for a particular person for different uses that the device may be put . such adjustment may be as a result of the bracing ( preferably being webbing or straps or the like ) having an adjustment feature or by having different anchor points to allow for it to be anchored at the shoulder straps . alternatively the shoulder straps may present different anchor points to allow for the bracing to engage at different locations with the shoulder strap thereby allowing for different brace positions to be established . a further aspect of the present invention is in relation to the location at where the chest band 11 of the harness is provided . it has been found that in order to assist in the preventing of the riding up of the rigid member that a chest band which extends about or proximate the waste of the torso of the user is not as effective as a band which extends immediately adjacent the pectorals of the rear of the user . a chest band 11 extending immediately below the pectoral muscles of the rear of a user aids and assists in the preventing of the riding up of the rigid member 2 when the device is in use . fig1 is a side view of a head rest and elongate member wherein the head rest portion 8 and elongate member 13 are pivotable relative to each other about pivot p being of a rotational axis parallel to the anterior and posterior planes of the body of the wearer . the elongate member 13 engaged to the base pad or otherwise fixed to the harness is presented to remain relatively stationary to the body of the user whereas the projection 8 presenting the heat engageable region of the device is able to pivot relative to the elongate member 13 . such pivoting will allow for the head rest to be presented at different angles to facilitate the support of a head at different angles of inclination .
the invention relates to head or neck supports which support the head or neck in a tilted back position and comprises or includes : a ) a harness locatable to the upper body portions of a person , b ) a rigid member extending from a region of the harness stabilized in respect of and by the use of the harness relative to the body , and when in use , the harness is attached to the body of a person , the rigid member extending therefrom to provide a support region thereof which when the person is in a substantially upright position , and the head is tilted backwards to allow viewing of an object above the horizontal , the support region comes in contact with at least part of the back of the head and provides at least vertical support to the head .