JP2003054188A - Blackboard for construction work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blackboard for construction work, in which the working efficiency of the recording of various kinds of construction work sites, works in factories or the like is improved by providing a support for freely varying the setting angle of the blackboard in order to prevent the hard-to-be-seen phenomenon of the characters of the blackboard or the like through the reflection of light such as the flush of a camera, sunlight or the like with the blackboard for construction work to be used from developing, at the same time, by facilitating the setting of the blackboard on a flat surface such as an iron plate or the like or at an elevated spot. SOLUTION: The blackboard 8 for construction work is formed by pivotally providing a supporting plate 4 provided with grooves 3 on one end of a supporting arm 1 having pivotally mounting parts 2 at both ends and pivotally mounting the other end of the arm 1 on the rear surfaces of the blackboard 7 and a whiteboard.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allows a construction blackboard used for recording various construction sites and works in a factory by photographing to reflect light rays such as a flash and the sun so that the contents of the blackboard can be seen. In order to eliminate the phenomenon that makes it harder, a support tool that allows the blackboard installation angle to be freely changed is provided, and a support tool that facilitates the installation of the blackboard on a smooth surface such as an iron plate or glass or at a high place is provided. The present invention relates to a construction blackboard for improving work efficiency.

[0002]

2. Description of the Related Art Conventionally, a generally used construction blackboard is installed at any part of the back of the blackboard such that one end of a substantially rod-shaped body is movable and the blackboard is installed. It was set up so that the blackboard could be leaned against the bar. As shown in Fig. 5, since the blackboard surface was forced to face slightly upward, the phenomenon that reflected the rays of light such as the flash and the sun during the shooting, making it difficult to see the items written on the blackboard was a problem for the photographer and related parties. There was no

Also, a blackboard for construction photo with legs of "Japanese Patent Application No. 9-326894" has been devised which includes a measure to solve the above problems, but the blackboard surface should be installed vertically on the ground. Since it is configured to, there is a problem in use, such as the blackboard surface facing upward when the ground is inclined or uneven.

[0004]

The present invention has been made in view of the above background, and the following are problems to be solved by the present invention. When recording various construction sites and factory work with photographs, the construction blackboard used reflects the rays of light such as the flash and the sun, making it difficult to see the items written on the blackboard, making it possible to freely set the installation angle of the blackboard An object of the present invention is to provide a construction blackboard provided with a support tool that can be solved by the above.

[0005]

According to the construction blackboard of claim 1, a supporting plate having a groove at one end of a supporting arm having rotating mounting portions at both ends is rotatably attached to the supporting arm. It is characterized in that one end is rotatably provided on the back surface of the blackboard.

[0006] The construction blackboard according to claim 2 is the claim 1
The bent structure is characterized in that bent hooks are inserted in the vicinity of the left and right upper portions of the back surface of the construction blackboard described in, and a cylindrical body having notches at both ends is fixedly provided.

The construction blackboard according to claim 3 is the construction blackboard according to claim 1.
According to another aspect of the present invention, a suction cup suction plate is provided on the back surface of the construction blackboard, and the suction cup is suspended near the suction cup suction plate.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Drawing 1 is a perspective view showing the 1st embodiment of the present invention. One end of the support arm 1 having a rotary mounting portion 2 provided by bending the end portion at both ends is provided with a plurality of grooves 3
A supporting plate 4 provided with a rotator is rotatably inserted into a hole 5 formed in a side surface near an end of the supporting plate 4, and a rotating attachment part 2 at the other end of the supporting arm 1 is opened at any position of a back frame 6 of a blackboard 7. The hole 5-1 is also rotatably inserted.

When the present invention is used, the support plate 4 is installed on the ground so that the groove 3 faces upward as shown in FIG. 1, and the lower end of the blackboard 7 is fitted into the groove 3 for use.
When viewed from the side, the installation angle of the blackboard can be changed from upward to vertical and downward in the range where the blackboard using the groove 3 and the support arm 1 and the support plate 4 form a triangle.

The mechanism and shape of the rotary mounting portion 2 of the support arm 1 are not particularly limited. As shown in FIG. 1, both ends of the support arm itself may be bent and pivotally attached so as to form a substantially C shape, or the ends of the support arm may be used as a universal joint or a shaft joint.

The shape of the groove 3 of the support plate 4 is not particularly limited, and it is possible to prevent the blackboard from moving inadvertently back and forth and to evenly ground the bottom surface of the support plate 4 and the lower end of the blackboard 7. The shape may be square or rounded as long as it plays a role.

As shown in FIG. 4, a notch is provided at the lower end of the blackboard 7 so that the groove 3 of the support plate 4 and the lower end of the blackboard 7 are evenly grounded to increase the stability of the installation. become. At the same time, the notch part also serves to prevent the blackboard from moving carelessly from side to side.

FIG. 2 is a perspective view showing a second embodiment of the present invention. A notch 11-1 is provided at the lower end in the direction toward the back of the blackboard 7, and a notch 11 is provided at the upper end in the direction toward the center of the blackboard in the vicinity of the upper left and right sides of the blackboard for construction according to claim 1.
-2 is provided on the tubular body 10 in which the bent hook 9 is inserted and fixed, and the fixing plate 13 is fixed to the back frame 6 of the blackboard with the screw 14 through the attachment hole 12 and fixed. I will set it up.

When the present invention is used, the hook 9 is axially moved vertically with respect to the blackboard surface, and the hook 9 is engaged with and fixed to the notch portion 11-1 at the lower end of the tubular body 10. Use 9 by hanging it on a scaffolding pipe or reinforcing bar. When not in use or during transportation, the hook 9 is axially moved in parallel with the blackboard surface, and the hook 9 is engaged with the notch 11-2 at the upper end of the tubular body 10 to be fixed. As a result, there is no safety problem such as the hook 9 accidentally popping out or being caught by an object.

FIG. 3 is a perspective view showing a third embodiment of the present invention. The suction board suction plate 15 is provided on the back surface of the construction blackboard according to claim 1 and claim 2, and one end of the string 16 is attached to the back frame 6 of the blackboard 7 with a screw 14-1 near the suction board suction plate 15.
And the other end of the string-like body 16 to the lateral hole 18 of the suction cup 17.
The suction cup 17 is hung by being inserted into the.

When using the present invention, the construction blackboard 8-2 is fixed by adsorbing the suction cup 17 on a smooth surface such as an iron plate or glass. Further, when the blackboard is transported or not used, the suction cup 17 is fixed by adsorbing the suction cup 17 to the suction cup suction plate 15 provided on the back surface of the blackboard. Thereby, the suction surface of the suction cup 17 can be protected from dirt and the like, and at the same time,
There is no safety problem such as the suction cup 17 being caught on an object during transportation.

Further, the suction cup suction plate 15 may have a flat shape as shown in FIG. 3 or a substantially cup shape for accommodating the suction cup 17.

As a means for connecting the suction cup 17 and the blackboard 7 of the present invention, a string-shaped member may be used as shown in FIG. 3, or a mechanical element such as a universal joint or a shaft joint may be used. Absent.

The support plate 4 and the back surface 6 of the blackboard 7 according to claim 1.
In order to store them in close contact with each other, it is possible to fix the support plate 4 by holding it at any place with a fastener, or use a Velcro (registered trademark) or a magnet to use the blackboard 7
The back surface 6 and the support plate 4 may be attached.

The support plate 4, support arm 1, hook 9 of the present invention,
Needless to say, the material of the tubular body 10 and the like is not particularly limited and may be metal or synthetic resin.

Needless to say, any color or pattern may be used for the support plate 4, support arm 1, hook 9, tubular body 10 and the like of the present invention.

The hook 9 of the present invention may be coated with a soft material such as vinyl.

The support plate 4, the hook 9 and the suction cup 1 of the present invention
The number of installations such as 7 may be single or plural.

[0024]

The installation angle of the blackboard or the like can be freely set from upward to vertical and downward, so that reflection of sunlight on the blackboard surface can be prevented from adversely affecting the photograph. To do. In particular, when the blackboard surface is facing downward, sunlight reflects off the blackboard surface toward the ground as shown in FIG. 6, so there is no adverse effect that reflected light is reflected in the photograph, and there are no items to be written on the blackboard. It clearly appears.

Further, as shown in FIG. 4, the support plate 4 is laid down to be grounded, and the uniform grounding with the lower end of the blackboard is realized by the groove 3 and the cut portion, thereby increasing the grounded area. Further, the stability, which is composed of both the structure in which the weight of the blackboard is applied to the support plate 4, can prevent the blackboard from being hit by the wind and falling when used outdoors.

When the support plate 4 is not used as shown in the embodiment, it is attached to the back surface of the blackboard with a fastener, a magnet, a velcro, etc., so that the support plate is not prepared from the back surface of the blackboard when carrying the construction blackboard. It does not come off and does not cause any safety problems such as contact with objects.

Since the hook 9 can be fixed and stored when not in use, the hook 9 does not pop out and get caught on an object during transportation, so that there is no safety problem.

Further, when the suction cup 7 is not used, the suction cup suction plate 15
Since it can be adsorbed on, the suction surface of the suction cup 17 can be protected from dirt and the like. At the same time, the suction cup 17 and the string-like body are prevented from popping out during transportation, and there is no safety problem such as being caught by an object.

Since the hook 9 is covered with a soft material such as vinyl, it has the effect of not damaging the suspended object.

Further, by providing a suction cup on the construction blackboard, it has become easy to suspend on a smooth surface such as an iron plate or glass, which has been difficult in the past.

Due to the above effects, the construction blackboard of the present invention improves the quality of photographs at the time of taking construction photographs at construction sites and factory work, etc., and facilitating the installation of the construction blackboard shortens the time required for photography. And labor can be reduced. Eventually, the working hours of the photographer will be shortened, which will bring about an economic effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a second embodiment of the present invention.

FIG. 3 is a perspective view showing a third embodiment of the present invention.

FIG. 4 is a perspective view showing an embodiment of the present invention.

FIG. 5 is a sunlight reflection state diagram when the blackboard surface is facing upward.

[Fig. 6] Fig. 6 is a sunlight reflection state diagram in a state in which the blackboard surface faces downward.

[Explanation of symbols]

1 ... Supporting arm 2 ... Rotating mounting part 3 ... groove 4 ... Support plate 5.5-1 ... hole 6 ... Back frame 7 ... Blackboard 8-8-1, 8-2 ... Construction blackboard 9 ... Hook 10 ... Cylindrical body 11-1, 11-2 ... Notch 12 ... Mounting hole 13 ... Fixing plate 14 ・ 14-1 ・ ・ ・ Screw 15 ... Sucker suction plate 16 ... String-shaped body 17 ... sucker 18 ... Horizontal hole

Claims (3)

[Claims] 1. A construction in which a grooved support plate is rotatably attached to one end of a support arm having a rotary attachment portion at both ends, and the other end of the support arm is rotatably provided on the back surface of the blackboard. blackboard. 2. The construction blackboard according to claim 1, wherein bent hooks are inserted in the vicinity of the upper left and right sides of the rear surface of the construction blackboard, and a tubular body having notches at both ends is fixed. . 3. A construction blackboard in which a suction cup suction plate is provided on the back surface of the construction blackboard according to claim 1, and a suction cup is hung near the suction cup suction plate.