JP3150683U - Construction display board - Google Patents

Abstract

An object of the present invention is to provide a construction display board that can be easily manufactured and can be recycled. SOLUTION: A display panel main body 2 and a long reinforcing member 4a which is detachably attached to both edges of a pair of opposing sides of the display panel main body 2 along the back surface of the display panel main body 2 are provided. . The display panel main body 2 includes a flat surface portion 21 having a surface that can be described by a writing instrument, and a side wall portion 22 that protrudes from the entire outer peripheral edge of the flat surface portion 21 toward the back surface side. The reinforcing member 4a is attached to the display panel main body 2 so that the upper end side thereof is swingable, and serves as a leg that supports the display panel main body 2 by bringing the lower end into contact with the installation surface. Since the display panel main body 2 and the reinforcing member 4a are formed of the same resin, the material can be easily recycled. Further, the warping of the display panel main body 2 is prevented by the reinforcing member 4a. [Selection] Figure 2

Description

  The present invention relates to a construction display board used for displaying notification items such as construction name, construction status, etc. at construction sites such as construction work, civil engineering work, gas work and waterworks.

  In construction work, civil engineering work, gas work and waterworks work, etc., at the construction site so that it can be proved that these works were properly constructed according to design documents, design drawings, specifications, etc. It is necessary to post the construction status for each process.

  Conventionally, such a construction situation has been described on a blackboard or a whiteboard, and a blackboard or a whiteboard on which a predetermined construction content is described is installed.

JP 11-291690 A

  By the way, the blackboard conventionally used as a display board which shows the construction situation is made of wood or steel, and the display surface is coated with blackboard paint. In addition, the whiteboard is configured by applying resin processing or enamel processing to the surface of the steel plate.

  In general, a wooden blackboard is formed by sticking veneer plates or the like, on which a blackboard paint is applied on a wooden frame, using an adhesive, an iron nail, a stapler, and the like. Further, a steel blackboard is constructed by covering a metal plate with a thin steel plate coated with a blackboard paint on both sides of a plastic substrate, with a metal frame. When such a blackboard becomes old, the riding of chalk worsens and is disposed of, but the blackboard is applied to the surface of the metal plate, the wooden plate, the metal plate, the adhesive bonding them Since it is integrated with the blackboard paint, it could not be separated and collected for each material and reused (recycled). In addition, the whiteboard could not be recycled because the surface of the steel plate was subjected to resin processing or enamel processing. In particular, in recent years, it has been desired to provide ecological products that are friendly to the global environment when the products are discarded.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a construction display board that can be easily manufactured and can be recycled.

  The construction display panel according to the present invention is a long display panel having a rectangular display panel main body and a back surface of the display panel main body, with both ends being detachably attached to the edges of a pair of opposing sides of the display panel main body. The display panel main body has a flat surface portion having a surface that can be described by a writing instrument, and a side wall portion that protrudes from the entire outer peripheral edge of the flat surface portion toward the back surface side. The reinforcing member is attached to the display plate body so that the upper end side thereof is swingable, and has a structure that serves as a leg that supports the display plate body by bringing the lower end into contact with an installation surface, and the display plate body and the reinforcing member are It is formed by the same resin.

  With such a configuration, the construction display board of the present invention can be easily manufactured by injection molding using a resin as a material, and the discarded construction display board can be further recycled using the material.

  Further, the reinforcing member is attached to the display plate main body so that the upper end side thereof is swingable, and is configured to be a leg that supports the display plate main body by bringing the lower end into contact with the installation surface. When a predetermined item is described on the surface using a writing instrument, the surface of the display plate body can be prevented from warping by placing the reinforcing member along the back surface of the display plate body. Further, by using the reinforcing member as a leg, the display panel main body after predetermined matters are described can be held in an upright state.

  Furthermore, since the display panel main body and the reinforcing member are formed using the same resin, it is not necessary to separate the materials and recycling is easy. As the resin, both a thermoplastic resin and a thermosetting resin can be used, and a thermoplastic resin is preferably used. As the thermoplastic resin, polypropylene having excellent strength is particularly preferable.

  Moreover, it is preferable that the construction display board of the present invention uses the plastic material as waste plastic. With such a configuration, it is possible to provide a display board for construction that is friendly to the global environment as compared with a case where virgin resin is used as a raw material.

  Moreover, it is preferable that the display panel for construction of the present invention has a configuration in which the display panel body has a plurality of ribs formed continuously on the outer peripheral edge of the back surface of the flat surface and the inner surface of the side wall. . With such a configuration, the strength of the display panel main body can be improved by a plurality of ribs.

  Further, the construction display board according to the present invention includes a concave portion formed on the surface of the flat portion along the outer peripheral edge, and an annular convex that rises along the outer peripheral edge near the outer peripheral edge of the back surface. It is preferable to set it as the structure which has a part. With such a configuration, the display panel body can prevent the flat portion from warping due to the concave portion and the annular convex portion, and can further improve the strength.

  Furthermore, the construction display board of the present invention may be an annular groove in which the concave portion is formed near the outer peripheral edge. With such a configuration, the surface of the flat surface portion of the display plate body can be a display surface that can be directly and smoothly described with a writing tool while preventing the warpage of the flat surface portion by the annular groove.

  The construction display board of the present invention is detachably attached to the surface of the display board body, and is attached to the surface of the display board body and a thin steel plate coated with blackboard paint. A resin frame covering the outer peripheral edge of the steel plate, and the recess may be formed to a size that can accommodate the steel plate.

  With such a configuration, the steel plate is supported by the frame body in a state where the steel plate is housed in a recess formed in the display plate body, so that a magnet can be attached to the plane on which the blackboard paint is applied on the steel plate. Thus, a display board having a descriptionable surface can be configured. In addition, since the steel plate is detachably attached to the display plate body, all the materials of the parts other than the steel plate can be recycled.

  As described above, the construction display board of the present invention can be easily manufactured by injection molding using waste plastic or the like, and the construction display board after molding can recycle materials, It is possible to provide an environmentally friendly construction display board. Furthermore, since the display panel main body and the reinforcing member are molded using the same resin, there is no need to separate them and recycling is easy.

It is a front view of the construction display board by this Embodiment 1. FIG. It is a rear view which shows the state with which the short 1st reinforcement member was assembled | attached in the display panel for construction by this Embodiment 1. FIG. It is sectional drawing which shows the state by which the 1st reinforcement member was assembled | attached to the display board main body of the construction display board by this Embodiment 1. FIG. It is the perspective view which looked at the display panel main body of the display panel for construction by this Embodiment 1 from the back. It is a front view of the handle attached to the display board main body of the construction display board by this Embodiment 1. FIG. It is the perspective view which looked at the 1st reinforcement member of the display panel for construction by this Embodiment 1 from the back. It is a front view of the 1st reinforcement member of the display panel for construction by this Embodiment 1. It is a perspective view which shows the state which made the display board main body of the construction display board by this Embodiment 1 stand horizontally using the 1st reinforcement member as a leg. It is a side view which shows the state which made the display board main body of the display board for construction by this Embodiment 1 stand horizontally using the 1st reinforcement member as a leg. It is a rear view which shows the state with which the long 2nd reinforcement member was attached in the display panel for construction by this Embodiment 1. FIG. It is a perspective view which shows the state which made the display board main body of the display panel for construction by this Embodiment 1 stand vertically using the 2nd reinforcement member as a leg. It is a front view of the construction display board by this Embodiment 2. FIG. It is a partial notch sectional view of the construction display board by this Embodiment 2. FIG. It is a partial notch sectional view of the construction display board by this Embodiment 3. FIG. It is a partial notch sectional view of the construction display board by this Embodiment 4. FIG.

(Embodiment 1)
Below, the display board for construction which concerns on Embodiment 1 of this invention is demonstrated, referring an accompanying drawing. FIG. 1 is a front view of the construction display board 1, FIG. 2 is a rear view of the construction display board 1, and FIG. 3 is a cross-sectional view of the construction display board 1.

  The construction display board 1 according to the first embodiment includes a rectangular display board body 2, a handle 3 that is detachably attached to the display board body 2, and a detachable attachment that is attached to the back side of the display board body 2. 1 reinforcement member 4a and 2nd reinforcement member 4b are provided. In the first embodiment, the display panel main body 2, the handle 3, the first reinforcing member 4a and the second reinforcing member 4b are all formed of the same thermoplastic resin, and in the first embodiment, injection molding is performed using polypropylene. ing. In addition, as a resin material to be used, only waste plastic, a mixture of waste plastic and virgin resin, only virgin resin, or the like can be used. In particular, when waste plastic is used, it is preferable because it is environmentally friendly and ecological. Furthermore, since the construction display board 1 according to the first embodiment is used as a blackboard, the thermoplastic resin is colored black, dark gray or green.

  FIG. 4 is a perspective view of the display panel body 2 viewed from the back side. As shown in FIGS. 1 to 4, the display panel body 2 has a flat surface portion 21 having a surface that can be described by a writing instrument such as chalk or crayon, and protrudes from the entire outer periphery of the flat surface portion 21 toward the back surface side. Side wall 22.

  The flat portion 21 is formed so that the entire surface is a smooth surface. Further, the side wall portion 22 has a height of about 2 cm, and is formed to have a tapered surface that spreads outward from the outer peripheral edge of the flat surface portion 21 in order to facilitate die cutting during injection molding. In addition, the height of the side wall part 22 is not limited to this. The four corners of the flat part 21 are formed in an arc shape, and the side surfaces of the four corners of the side wall part 22 are formed to have curved surfaces. The corner portions of the flat portion 21 and the side wall portion 22 are also formed to have a curved surface.

  Further, a large number of triangular ribs 23 are formed on the display panel body 2 so as to be continuous with the outer peripheral edge of the back surface of the flat surface portion 21 and the inner surface of the side wall portion 22. Specifically, as shown in FIGS. 2 and 4, eight are formed for each long side of the plane portion 21 and six are formed for each short side.

  As shown in FIG. 4, two handle attachment holes 24 for attaching a U-shaped handle 3 pass through each of the long side and short side center portions of the side wall portion 22 of the display panel main body 2. Is formed. The four handle attachment holes 24 are formed in a portion where the thickness of the side wall portion 22 is partially increased, and the shape of the holes is rectangular.

  FIG. 5 is a front view of the U-shaped handle 3, and the handle 3 has a grip portion 31 having the same length as the interval between the two handle mounting holes 24 formed on the same surface of the side wall portion 22. It has a support portion 32 that bends at right angles from both ends of the grip portion 31 and extends. As shown in FIG. 5, a branch portion 33 that is bifurcated is formed at the tip of each support portion 32. A stepped portion 34 and a tapered surface 35 tapering from the stepped portion 34 toward the tip are formed on the outer side surface of each branch portion 33. Moreover, the cross-sectional shapes of the grip part 31 and the support part 32 excluding the branch part 33 are H-shaped.

  When the handle 3 is attached to the display panel main body 2, the two pieces of the branch portion 33 are elastically deformed in the direction of narrowing and inserted into the handle attachment hole 24 from the outer surface of the side wall portion 22. At this time, the branch portion 33 is smoothly inserted into the handle attachment hole 24 by the tapered surface 35 of the branch portion 33. The branch portion 33 is elastically recovered after passing through the handle mounting hole 24, whereby the step portion 34 is locked to the inner surface of the side wall portion 22, and the handle 3 is attached without being detached from the display panel main body 2. .

  Further, as shown in FIGS. 2 to 4, the first reinforcing member 4 a or the center of one long side and the short side of the side wall portion 22 of the display panel body 2 is provided between the two handle mounting holes 24. An insertion hole 25 into which two protrusions 41 formed at one end in the longitudinal direction of the second reinforcing member 4b are inserted is formed. The thickness of the side wall portion 22 of the portion where the insertion hole 25 is formed is such that the insertion hole 25 having a length in which the protrusion 41 of the first reinforcing member 4a or the second reinforcing member 4b is completely inserted is formed. It is formed thicker than the portion where the handle mounting hole 24 is formed. Each insertion hole 25 is formed in a rectangular shape so as to follow the cross-sectional shape of the protrusion 41 of the first reinforcing member 4a or the second reinforcing member 4b.

  Further, as shown in FIGS. 3 and 4, the first reinforcing member 4 a or the second reinforcing member is provided at the central part of the long side and the short side where the insertion hole 25 is not formed in the side wall part 22 of the display panel main body 2. A long hole 26 into which the other longitudinal end of 4b can be inserted is formed. Furthermore, as shown in FIGS. 2 and 4, two plate-like protrusions 27 for positioning the first reinforcing member 4 a or the second reinforcing member 4 b are provided on the back surface of the flat portion 21 near the long holes 26. It is formed one by one.

  As shown in FIGS. 2 and 3, the first reinforcing member 4 a is configured by a belt-like plate member that is attached in a state along the back surface of the flat portion 21 in the display plate body 2. The first reinforcing member 4 a is detachably supported at both ends in the longitudinal direction with respect to the display panel main body 2 so that the plane side of the belt-like body is parallel to the flat portion 21 of the display panel main body 2.

  FIG. 6 is a perspective view of the first reinforcing member 4a as seen from the back side, and FIG. 7 is a front view of the first reinforcing member 4a. As shown in FIGS. 3, 6, and 7, the first reinforcing member 4 a has two pin-like protrusions 41 that are inserted into the insertion holes 25 of the display panel main body 2 at the top end portion. Yes. Moreover, the lower front-end | tip part of the 1st reinforcement member 4a is formed in a taper shape, and it is formed so that a side surface and a plane may have a taper. The lower end of the first reinforcing member 4a is inserted into a long hole 26 formed in the display panel main body 2 as shown in FIG.

  Further, the first reinforcing member 4 a includes a fixing portion 42 on which the protrusion 41 is formed and a leg portion 44 that is connected to the fixing portion 42 via the hinge portion 43. The hinge portion 43 is positioned so as to be biased toward one plane side (front side) of the fixing portion 42 and the leg portion 44, and so that the fixing portion 42 and the leg portion 44 are close to each other. The leg part 44 is connected and formed into a thin wall. The fixed part 42, the hinge part 43, and the leg part 44 are integrally formed by injection molding. Since the polypropylene constituting the first reinforcing member 4a is hard, it has high strength against bending. Therefore, even if the thin hinge portion 43 is formed by injection molding, durability against bending is ensured. Have.

  Further, when the protrusion 41 is inserted into the insertion hole 25 of the display panel main body 2 so that the hinge portion 43 is on the front side, the first reinforcing member 4a has the fixing portion 42 brought into contact with the back surface of the flat portion 21. It becomes a state. When the lower end of the leg portion 44 is inserted into the elongated hole 26 with the projection 41 inserted into the insertion hole 25, the leg portion 44 abuts the back surface of the flat surface portion 21 together with the fixing portion 42 via the hinge portion 43. The display panel main body 2 is reinforced so as not to warp by the first reinforcing member 4a.

  In addition, the first reinforcing member 4a has the leg portion 44 that is fixed to the fixed portion 42 via the hinge portion 43 as shown in FIGS. 8 and 9 when the lower end of the leg portion 44 is removed from the elongated hole 26. It swings. However, when the leg portion 44 is stationary at a predetermined angle with respect to the flat surface portion 21, the hinge portion 43 is arranged on the front side, and when the leg portion 44 is swung to a predetermined angle, the angle of the fixed portion 42 is increased. The corner portion of the leg portion 44 comes into contact with the portion to maintain a predetermined angle. FIG. 8 is a perspective view showing a state in which the display plate body 2 stands in a horizontally long state with the first reinforcing member 4a as a leg, and FIG. 9 shows a state in which the display plate body 2 is in a horizontally long state with the first reinforcing member 4a as a leg. It is a side view which shows the state made to stand.

  As for the leg part 44 of the 1st reinforcement member 4a, the grid | lattice-like thick part 45 is formed in both surfaces of a plane part. The thick portion 45 is also formed at the edge of the flat portion, and the thick portion 45 maintains the first reinforcing member 4a with high strength. Further, an arc plate-like rib 46 is formed on the side surface of the lower end of the leg portion 44.

  In the first embodiment, the first reinforcing member 4a is configured such that both ends in the longitudinal direction are detachably attached to the pair of long sides in the display panel main body 2. Furthermore, the construction display board 1 of the first embodiment shows a plan view of the construction display board 1 in FIG. 10 and a state in which the construction display board 1 in FIG. 11 is erected so that the flat portion 21 is vertically long. As shown in the perspective view, the second reinforcing member 4b longer than the first reinforcing member 4a is also provided so as to have the same length as the longitudinal direction of the flat portion 21.

  The second reinforcing member 4b is different from the first reinforcing member 4a only in the length of the leg portion 44, and the other components are the same as those of the first reinforcing member 4a. The description is omitted. And when attaching the 2nd reinforcement member 4b to the display board main body 2, as shown in FIG.10 and FIG.11, it forms in the short side part of the display board main body 2 so that the hinge part 43 may become a front side. The projection 41 of the second reinforcing member 4b is inserted into the insertion hole 25, the lower end tip of the second reinforcing member 4b is inserted into the long hole 26 formed in the short side portion, and the second reinforcing member 4b becomes the flat portion 21. It is attached to the display panel main body 2 in a state of abutting on the display panel. When the second reinforcing member 4b is used as a leg for supporting the display panel body 2 in an upright state, the leg part 44 is connected to the hinge part 43 with the projection 41 inserted into the insertion hole 25 of the display panel body 2. And swings in a direction away from the flat surface portion 21 of the display panel main body 2.

  The construction display board 1 according to the first embodiment can be formed by using thermoplastic waste plastic because all the structural members are formed by injection molding using the same synthetic resin material. When the plate 1 is discarded, the material can be recycled. Thus, since the construction display board 1 according to the first embodiment can recycle the waste plastic many times, the construction display board 1 that is friendly to the global environment can be provided.

  Furthermore, the construction display board 1 according to the first embodiment can directly write characters on the surface of the flat portion 21 of the display board body 2 using chalk. Further, by molding using a thermoplastic resin colored in a dark and dark color such as black or green, the written characters are also clarified because the color of the flat portion 21 is dark and dark.

  In the construction display board 1 according to the first embodiment, the flat surface portion 21 is curved with writing pressure by providing the first reinforcing member 4a or the second reinforcing member 4b so as to contact the back surface of the display board main body 2. Therefore, it is possible to smoothly write on the flat surface portion 21 while holding the construction display board 1 in the hand. In addition, when the display panel main body 2 is desired to stand, the lower end of the leg portion 44 of the first reinforcement member 4a or the second reinforcement member 4b is detached from the long hole 26 of the display panel main body 2, thereby It can be used as a supporting leg.

  In addition, the surface of the plane part 21 may be mirror-finished, or may be formed so as to form fine irregularities such as a satin finish. The surface of the flat portion 21 can be mirror-finished to improve water repellency and improve water resistance. Furthermore, when the surface of the flat portion 21 is formed so that fine irregularities are formed, the fixability of the chalk or crayon to the flat portion 21 is improved.

(Embodiment 2)
In the first embodiment, it is described directly on the display panel main body 2. However, as shown in FIGS. 12 and 13, the construction display board 1a of the second embodiment has a flat portion 21a of the display panel main body 2a. A thin steel plate 5 coated with blackboard paint is disposed on the surface, and is described on the blackboard paint surface of the steel plate 5. 12 is a plan view of the construction display board 1a of the second embodiment, and FIG. 13 is a partial cross-sectional view of the construction display board 1a.

  The construction display board 1a of Embodiment 2 includes a display board main body 2a, a handle 3, a first reinforcing member 4a, a second reinforcing member 4b (only the second reinforcing member 4b is shown in FIG. 12), a steel plate 5, and A frame 6 that supports the steel plate 5 is provided. In addition, the handle 3, the 1st reinforcement member 4a, and the 2nd reinforcement member 4b of the construction display board 1a of this Embodiment 2 are using the same thing as the thing of Embodiment 1. FIG.

  The display board main body 2a of the construction display board 1a of the second embodiment is also rectangular, and has a flat surface portion 21a having a surface on which the rectangular steel plate 5 is disposed, and a back surface from the entire outer periphery of the flat surface portion 21a. Side wall part 22a which protrudes toward the side.

  The flat surface portion 21a has a surface area larger than that of the steel plate 5, and a rectangular recess 28 in which the steel plate 5 can be stored is formed on the surface. The recess 28 has the same depth as the thickness of the steel plate 5 and is formed in a rectangular shape that is slightly smaller than the surface area of the flat portion 21a. Therefore, the outer shape of the recess 28 is a rectangle along the outer peripheral edge of the flat portion 21a.

  A large number of through holes 29 into which the rivets 7 are fitted are formed on the side of the recess 28 in the flat surface portion 21a. In addition, a rectangular annular convex portion 30 that rises along the outer peripheral edge is formed near the outer peripheral edge on the back surface of the flat surface portion 21 a and inward of the through hole 29. Furthermore, a plurality of ribs 23 are formed on the outer side of the annular protrusion 30 so as to be continuously formed on the back surface of the flat surface portion 21a and the inner surface of the side wall portion 22a as in the first embodiment. Although not shown in FIG. 12, these ribs 23 are formed at the same positions as in the first embodiment.

  Similar to the first embodiment, the side wall 22a has a height of about 2 cm and is formed to have a tapered surface extending outward from the outer peripheral edge of the flat surface portion 21a. In addition, the height of the side wall part 22a is not limited to this. The four corners of the flat portion 21a are chamfered, and the side surfaces of the four corners of the side wall portion 22a are also chamfered. The corners of the flat portion 21a and the side wall portion 22a are also chamfered.

  The display panel body 2a of the second embodiment is also formed with the same handle mounting hole 24, insertion hole 25, elongated hole 26, and plate-like protrusion 27 as those of the first embodiment, which are not shown in FIG. (See FIG. 4).

  The steel plate 5 has a thickness of about 0.2 mm, and blackboard paint is applied to one surface. The steel plate 5 is stored in the concave portion 28 of the flat surface portion 21a so that the surface coated with the blackboard paint is the upper surface.

  The frame 6 is composed of four straight plate members. The two straight plate-like members are formed to be equal to the length of the long side of the flat surface portion 21a, and the other two straight plate-shaped members are formed to be equal to the length of the short side of the flat surface portion 21a. The straight plate-like member is in a state where both end portions thereof are obliquely cut out, and a rectangular frame 6 is configured by attaching the respective inclined surfaces.

  Further, the frame 6 is formed with a large number of insertion holes 61 through which the rivets 7 are inserted. After the steel plate 5 is stored in the concave portion 28 of the flat surface portion 21 a, the frame body 6 is placed on the outer peripheral edge portion of the steel plate 5. Then, the rivet 7 is inserted into the insertion hole 61 of the frame body 6, and the rivet 7 is further inserted into the through hole 29 formed in the flat portion 21 a, so that the outer peripheral edge portion of the steel plate 5 is covered with the frame body 6. Thus, the steel plate 5 is supported by the display plate body 2a.

  In the second embodiment, all members including the frame body 6 and the rivets 7 except for the steel plate 5 are injection molded using polypropylene. As a result, by removing the frame 6 from the display plate main body 2a and removing the steel plate 5 from the display plate main body 2a, other members except the steel plate 5 can be recycled without separating materials.

  Furthermore, since the display board 1a for construction of this Embodiment 2 has the display surface comprised of the steel plate 5, it can be described not only by chalk or the like, but also a magnet can be attached to the display surface.

  Moreover, since the construction display board 1a according to the second embodiment is configured by the steel plate 5 to which the blackboard paint is applied on the display surface described in chalk or the like, the other members excluding the steel plate 5 are: Not only a dark and dark color but also a desired color such as white can be obtained.

(Embodiment 3)
In the first embodiment, the display panel body 2 is directly described, and the entire surface of the flat surface 21 and the back surface of the display panel body 2 is formed smoothly. As shown in the partial cross-sectional view of the construction display board 1b of FIG. 14, the construction display board 1b of the third embodiment has a flat surface portion 21b and a side wall portion 22b as in the first embodiment. However, the shape of the flat portion 21b is different from that of the first embodiment.

  In the construction display board 1b of the third embodiment, the same constituent members as those of the construction display board 1 of the first embodiment are used as the other constituent members except the display board body 2b. The display panel main body 2b is formed with an annular recess 28b composed of an annular groove along the outer peripheral edge on the surface of the flat portion 21b near the outer peripheral edge, and on the back surface of the flat portion 21b near the outer peripheral edge. An annular convex portion 30b that rises along the line is formed.

  According to the construction display board 1b of the third embodiment, characters or the like can be directly written on the surface of the flat part 21b of the display board main body 2b, and the annular concave part 28b and the annular convex part formed on the flat part 21b. The strength of the flat portion 21b can be improved by 30b, the warpage of the flat portion 21b can be prevented, and the construction display board 1b without deformation can be provided.

(Embodiment 4)
In the said Embodiment 2, it was set as the structure which arrange | positions the steel plate 5 on the surface of the plane part 21a of the display board main body 2a, and supports the outer periphery part of the steel plate 5 with the frame body 6. FIG. Further, in the second embodiment, the size of the outer edge of the frame body 6 is substantially the same as the size of the outer edge of the flat portion 21a. However, the construction display board 1c of the fourth embodiment is the construction display board shown in FIG. As shown in the partial sectional view 1c, the frame body 6 is also accommodated in the recess 28c in which the steel plate 5 is accommodated.

  In the construction display board 1c of the fourth embodiment, the same constituent members as the construction display board 1a of the second embodiment are used as the other constituent members except the display board body 2c. The display panel main body 2c has a flat surface portion 21c and a side wall portion 22c as in the construction display plate 1a of the second embodiment, and a concave portion 28c for housing the steel plate 5 is formed on the surface of the flat surface portion 21c. Yes. Further, the display panel main body 2c is formed so that a through hole 29c for fitting a rivet 7c for fixing the frame body 6 made of four linear plate members to the flat surface portion 21c is opened in the recess 28c. ing. The concave portion 28 c is larger than the surface area of the steel plate 5, and the through hole 29 c is not covered by the steel plate 5, and is formed in a size along the outer edge of the frame body 6. Further, on the back surface of the flat surface portion 21c, an annular convex portion 30c that rises along the outer peripheral edge is formed near the outer peripheral edge.

  In the fourth embodiment, all members including the frame body 6 and the rivet 7c except for the steel plate 5 are injection-molded using polypropylene. As a result, by removing the frame 6 from the display plate main body 2c and removing the steel plate 5 from the display plate main body 2c, the other members except the steel plate 5 can be recycled without separating materials.

  Moreover, in the construction display board 1c according to the fourth embodiment, since the frame 6 is also housed in the recess 28c, it is easy to position the frame 6 with respect to the display board main body 2c.

  Further, in each of the above-described embodiments, either the first reinforcing member 4a or the second reinforcing member 4b is attached to the display panel main body 2, but one reinforcing member is used to prevent the flat portion 21 from warping. The other reinforcing member can be attached to the display plate body 2 and used as a leg.

  Moreover, in each said embodiment, although the 1st reinforcement member 4a and the 2nd reinforcement member 4b were provided according to the short side length and long side length of the display board main body 2 as a reinforcement member, a reinforcement member can be expanded-contracted. It is also possible to form such that the length can be matched with the short side length and the long side length of the display panel main body 2. With such a configuration, one reinforcing member can be provided.

  In addition, this invention is not limited to the said embodiment, A various change can be given within the range of this invention.

1, 1a, 1b, 1c Display boards for construction 2, 2a, 2b, 2c Display board main body 3 Handle 4a First reinforcing member 4b Second reinforcing member 5 Steel plate 6 Frame 7, 7c Rivet 21, 21a, 21b, 21c Planar portion 22, 22a, 22b, 22c Side wall portion 23 Rib 24 Handle mounting hole 25 Insertion hole 26 Long hole 27 Plate-like projections 28, 28b, 28c Recess 29, 29c Through hole 30, 30b, 30c Annular convex portion 31 Gripping portion 32 Support portion 33 Branch portion 34 Step portion 35 Tapered surface 41 Projection 42 Fixing portion 43 Hinge portion 44 Leg portion 45 Thick portion 46 Rib 61 Insertion hole

Claims (6)

A rectangular display board body;
Along the back surface of the display panel main body, a long reinforcing member that is detachably attached to both edges of a pair of opposing sides of the display panel main body,
The display panel main body has a flat surface portion having a surface that can be described by a writing instrument, and a side wall portion protruding toward the back surface side from the entire outer periphery of the flat surface portion,
The reinforcing member is configured to be a leg that supports the display plate body by attaching the lower end to the installation surface so that the upper end side is swingably attached to the installation surface.
A display panel for construction, wherein the display panel main body and the reinforcing member are formed of the same resin. In the construction display board according to claim 1,
A construction display board, wherein the resin material is waste plastic. In the construction display board according to claim 1 or 2,
The display panel main body has a plurality of ribs formed continuously on the outer peripheral edge of the back surface of the flat part and the inner surface of the side wall part. In the construction display board according to any one of claims 1 to 3,
The display panel main body has a concave portion formed along the outer peripheral edge on the surface of the flat portion, and an annular convex portion rising along the outer peripheral edge near the outer peripheral edge of the back surface. Display board.   5. The work display board according to claim 4, wherein the recess is an annular groove formed near the outer peripheral edge. In the construction display board according to claim 4,
A thin steel plate that is detachably attached to the surface of the display board body and coated with blackboard paint,
It is detachably attached to the surface of the display board main body, and comprises a resin frame that covers the outer peripheral edge of the steel plate,
A construction display board, wherein the recess is formed to have a size capable of accommodating the steel plate.

Images