A REFLECTION DEVICE FOR ROADSIDE MARKING

Abstract: A reflective roadside marking post, where the reflector (8) is protected from dirt by a tubular means (4) projecting in front of the reflector. The tubular means is by partition walls (6) divided into a number of axial channels or cells and the reflector (8) is visible through said cells. In order to make the reflector reachable for cleaning purposes it and/or the tubular means (4) is/are movable in relation to the post (1).

Description: ' A REFLECTION DEVICE FOR ROADSIDE MARKING Background of the invention The present invention refers to a reflection device for roadside marking and of the type comprising at least one tubular means projecting in front of the reflector, said tubular means being intended to provide a stationary air cushion in front of the reflector. Reflection posts are used for improving the visual guiding in darkness on roads where a stationary road lighting is missing and contribute to essentially improve the traffic s fety, l^anv drivers have when driving in the dark felt the unpleasant feeling of ' not surely knowing how the road is leading especially when they are dazzled or when the windscreen is spattered. Critical situations caused by this could* be avoided if the road boarders were marked with reflection posts. The reflection posts previously used have been affected by dirt verv soon, whereby the reflection ability is decreased, and the necessary cleaning is time-re¬ quiring and expensive. As examples of reflection posts where the reflective material is unprotected and therefore quickly is soiled can be mentioned the reflection posts .shown in the Swedish patent specifications 317.015 and 366.081. In the Swedish patent specification 378.631 is shown a reflection post, where the reflector is placed in and protected by a tube and where the tube portion projecting in front of the reflector is of a sufficient length for the provision of" a protecting air cushion in front of the reflector. The reflector is further- more removable from the tube in order to facilitate the cleaning. Comparative tests initiated by the National Swedish Council for Road Safety Research with other reflection posts have clearly proved the superiority of this reflection post regarding need of cleaning and visibility. The visibility was about 3 times higher than for the next best reflection post while the need of cleaning was only 1/3 than for the other posts. By e.g. the Swedish patent specification 55.2-40 ' and the US patent specification 1.659.^09 it is previously known to arrange in front of car headlights a device comprising a great number of cells with a relatively high ratio length/diameter. The light beams from the headlights are thereby prevented from diverging to any essential extent and the dazzling effect from the headlight is prevented. Thus these publications describe devices for delive¬ ring light while the present invention refers to a device for reflecting light. These two previously known devices would not be applicable for the pur¬ pose of the present invention, viz. to prevent the reflector from being affected by dirt and retaining a good reflection ability. The device described in the Swedish patent specification 55.2*40 has a far too high ratio between length and dimeter of the cells, for achieving any practically usuable reflection ability. The device described in the US patent speci¬ fication 1. 5 . 09 can on the other hand not act as a soil protection, since there is an opening between the headlights and the device and no air cushion which would prevent soiling can therefore be formed. Summary of the invention The purpose of the invention is to provide a reflec¬ tion post of the type described in the introduction, vjthich has the advantages of providing a prevented or delayed soiling and simple cleaning of the reflec¬ tor at the same time as' the length of the tubular means is considerably reduced. This has according to the invention been achieved thereby that the tubu¬ lar means and/or the reflector is/are moveable in relation to a supporting housing and that the tubular means is divided into a number of substantially axial channels by means of partition walls. By dividing the tubular means into several axial channels the length of the tubular means can be considerably reduced retaining the air cushion effect, which prevents or delays soiling of the reflector. Description of the drawings The invention will now be further described with refe¬ rence to some embodiments shown in the accompanying drawings. Figure 1 is a perspective exploded view of the upper part of a post with reflection device, Figure 2 is an analogue view of a modified reflection device according to the invention, Figure 3 is a section through a further embodiment of the invention, Figure is a section along line IV - IV in figure 3, Figure 5, 6 and 7 are horizontal setions through further embodiments of the reflection device, Figure 8-1-4 are side, front or perspective views of different types of reflection devices according to the invention, Figure 15 is. a vertical section through another embodi¬ ment of the reflection device, Figure 16 is a front view of a further embodiment of the reflection device, Figure 17 is a section on a larger scale along line X - X in figure 16, Figure 18 is a vertical section through a further embodiment of the reflection device, Figure 19 is a section along line XII - XII in figure 18. Description of some embodiments The roadside marking post according to the embodiment shown in figure 1 is denoted with the numeral 1 and comprises a tube, which at its upper portion is pro¬ vided with a rectangular opening 2 and on the oppo- site side with two circular openings 3. Through the upper open end of the post 1 a dirt protection means •4 is insertable. Said dirt protection means *4 com¬ prises an outer frame 5, which by means of a number of partition walls 6 forms a tubular means comprising a number of cells, whereby the length of each cell is at least equal to half the inner cross-section of the cell. The end of the frame 5 located in front of the openings 3 has a projecting lip 7, against which a reflection plate 8 is intended to abut. The reflec- tor 8 is visible through the rectangular opening 2 through the cells of the tubular means -4 as well as through the circular openings 3. At one of the short ends of the tubular means 4 is provided a plate 10, which when the tubular means is inserted in the post forms a termination or cover of the post 1. When the reflector 8 is to be cleaned the tubular means -4 is pulled out of the post, so that the reflector can be removed. The embodiment shown in figure 2 differs from the embodiment of figure 1 by the fact that the tubular means -4 is provided with a rear end wall 9 > which at its lower end is connected to the tubular means •4. An aperture for the reflector is formed between the end wall 9 and the tubular means 4. In the end wall 9 are provided two circular holes 11 intended to be arranged just opposite the openings 3 in the post 1. The tubular means 4 is pushed down in the post 1 until it abuts a stop 12 in the post. The length of the reflector 8 exceeds the depth of the aperture 11, so that a grip end is provided. When cleaning the reflector 8 the tubular means 4 can be left in the post 1. The tubular means 4 can possibly be fixed to the post 1 in any suitable way, e.g. by screws. A removable cover 13 is provided as an end termination of the post. In the embodiment according to figures 3 and 4 the tubular means 4 can be inserted through side openings 14 and 15 in the post 1. The tubular means has prin- cipally the same design as the one shown in figure 2, but it is furthermore provided with a stop edge l6 limiting the insertion of the tubular means 4 in the post 1. The tubular means is secured against dis¬ placement on one hand thereby that the reflector 8 projects somewhat above the tubular means and on the other hand thereby that the cover 13 for the post is provided with locking pins 17 cooperating with corresponding recesses 18 in the tubular means 4. According to this embodiment it is only required that the cover 13 is removed for making it possible to reach the reflector 8 for cleaning. If also the tubular means 4 has to be cleaned it can easily be removed from the post after removal of the reflector. In the embodiment according to figures 5 and 6 the tubular means is inserted through a side opening in - the post 1. The tubular means 4 has a border 19 gripping round said side opening in the post and thus limiting the insertion of the tubular means in the post. The tubular means 4 is secured to the post 1 e.g. by screws or snap-in members. The reflector 8 is kept in place by a cover 20, which is snapped on the tubular means 4. In the embodiment according to figure 5 the tubular means 4 does not extend right through the tube 1, but only a part into it, whereas in the embodiment according to figure 6 the tubular means 4 extends through the post and out through a side opening in the opposite side of the post. A second reflector 21 is placed in a recess on the outside of the cover 20. In order to reach the reflectior 8 for cleaning pur¬ poses it is in the embodiment according to figure 5 necessary to remove the tubular means 4 through the side opening and the cover 20 from the tubular means. In the embodiment according to figure 6 is it . sufficient to remove the cover 20 from the tubular means 4, whereby the reflector 8 can be reached. In the embodiment according to figure 7 an insert 22 is placed in the side opening in the post 1, said insert 22 having a border 23 gripping round the side opening. The insert 22 is fixed to the post 1. The tubular means 4 " can be detachably secured to the in- sert 22, e.g. by means of beads 23 which are pressed into openings or cavities in the insert. The reflec¬ tor 8 is secured between the insert 22 and the tubu¬ lar means 4 and can be reached for cleaning by removin the tubular means from the insert. In the embodiment according to figures 8-15 the reflec¬ tor 8 is fixed to the post 1 close to the upper end thereof. Such reflection posts are common .in many countries, but have as previously suffered from the drawback of being dirty very quickly, whereby the reflection ability is considerably decreased. In order to avoid this a dirt protection comprising a tubular means 4 of the above mentioned type is placed in front of the reflector 8. In order to facilitate cleaning of the reflector 8 the tubular means 4 must be removed, which can be made in many different ways. In figures 8 and 9 the tubular means 4 is pivotally mounted to a bracket 24, which is placed above the reflector 8. The tubular means 4 can easily be pivoted upwards as shown in figure 9 » thus leaving the reflector 8 free for cleaning. The tubular means 4 is preferably detachably secured at its lower edge to the reflector 8 or the post 1 e.g. by snap action. In the embodiment according to figure 10 the tubular means can be snap-locked round beads 25 at the upper and lower edges of the reflector 8. In the embodiment according to figure 11 the tubular means 4 is pivoted about hinges at one of its long sides and in figure 12 the tubular means is pivoted about a hinge 26 at its upper edge. In the embodiment of figure 13 the tubular means 4 can be pushed down in front of the reflector 8 in guides and be removed by pulling it upwards. The same applies for the embodiment according to figure 14, but here the tubular means 4 is connected with a cover 27 forming an end termination of the post 1. In the embodiment according to figure 15 the cover 27 is pivotallv connected to the tubular means -4. The embodiment according to figures 16 and 17 differs from the above described embodiments by the fact that the reflector or reflectors 8 are secured to a member 28 projecting from the post 1, which in this case has a triangular cross-section, said member 28 having shoulders 29 on opposite sides behind which shoulders a pair of partition walls 6 of the tubular means 4 grip. The tubular means -4 comprises two halves, arranged on opposite sides of the member 28 in front of the reflectors 8 and which can he turned about beads 30 and mke the reflectors 8 free for cleaning. The reflec¬ tion device can be manufactured as a separate unit, which can be attached to an ordinary post. In the embodiment according to figures 18 and 19 the reflector or reflectors 8 are in the same way as in figures 16 and 17 fixed to the member 28 projecting from the post 1, which in this case has a circular cross-section, said member 28 being screwed 31 to the post 1. The tubular means 4 is integrally connected with a portion 32 projecting down into the post 1, said portion 32 having an attachment 33 for a spring 34. The spring 3 is at its opposite end connected to an attachment 35 in said member 28. The tubular means 4 and the connected portion 32 can be pushed downwards in the post 1 against the action of the spring 34, whereby the reflectors 8 are free for cleaning. An automatic cleaning would in this case be possible, where a device with rotating brushes is placed on the tubular means 4 pressing this downwards and simul¬ taneously cleaning the reflectors 8. The tubular means 4 automatically returns to its initial position when ' the pressure from the device with the rotating brushes is interrupted. Th >e invention is not limited to the embodiments de- scribed above but can be varied within the scope of the claims.

Claims: . . 1. A reflection device for roadside marking and of the kind comprising at least one tubular means projecting in front of the reflector and being supported by a post, said tubular means being intended to provide a stationary air cushion in front of the reflector and being removeable from the reflector for making this accessible for cleaning purposes, c h a r a c t e r i z e d i n, that the tubular means (h) is divided into a plurality of substantially axial channels by means of partition walls (6), whe in each channel the ratio between the axial length of the channel and the inner transverse dimension of the channel is at least 1:2 and does not exceed a limit determined by road safety demands concerning the largest angle of incidence at which the light towa the device is re lected and that the post ( 1 ) is provided with guide means for the tubular means (4), which is insertable or fittable into the post, so that it at least substantially is rece within the limiting surfaces of the post or its imaginary extensi 2. A reflection device according to claim 1, c h a r a c t e r z e d i n, that the tubular means (h) is insertable into the post (l) through an open upper end thereof to a position where it at least substantially is received within the post and that the reflector (8) is held behind the tubular means within the post an is removeable " from the post. 3. A reflection device accordning to claim 2, c h a r a c t e z e d i n, that means (7;9) for detachably holding the reflector (8) ' are arranged at one end or side of the tubular means (4). k . A reflection device according to claim 1, c h a r a c t e z e d i n, that the tubular means (k) is insertable through a sid opening in the post (l) to a position where it at least substa ially is received within the post and that the reflector (8) is behind the tubular means within the post and. is removeable from t post . 5. A reflection device according to claim 1 , c h a r a c t e r ! - z e d i .n, that the re lector .or reflectors (8) is/are attached to a member (28) projecting upwards from and being fixed to the post (l), that the tubular means (k) in one position is arranged in front of the reflector or reflectors and in this position together with said member (28) projecting from the post form an extension of the post with substantially the same cross-sec¬ tional shape as this and in another position is arranged to expose the reflector or reflectors for cleaning purposes. 6. A reflection device according to claim 5 > c h a r a c t e r i ¬ z e d i n, that the tubular means (4) is hingedly mounted at the post (1) and can be swung from a position in' front of the reflector or reflectors (8) to a position where the reflector or reflectors is/are exposed and vice versa. 7- A reflection device according to claim 5 . c h a r a c t e r i ¬ z e d i n, that the tubular means ( -4 ) against the actions o± * a spring (13) -- displaceable downwards in \.hθ post (l) to a. position where the reflector or reflectors (8) is/are exposed.

Inventors: BJOERLUND J
Applicants: BJOERLUND J
Application year: 1979
Main classification: E01F9
IPC codes: E01F9