JPH11101643A - Base line display unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base line display unit for drawing a straight white line between parted two points on a road. SOLUTION: This base line display unit displays a straight base line between parted two points of an object and comprises a portable type laser beam transmitter 10, which is installed on one side of the two points and emits vertically- arranged straight laser light rays and a laser beam reception part 20, which is installed on the other side of the two points in movable manner, receives the straight laser light rays r, and is provided with an inclined light receiving screen to display the standard line of the received light rays. A straight white line can easily be drawn on the surface of a road by incorporating the base line display uniting a line drawing bench 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser beam transmitter and a laser beam receiver useful for drawing a straight white line or cutting a straight line between two points separated from each other such as a road. The present invention relates to a base line display unit including a unit.

Conventionally, when a straight white line or a straight cut is made on a road surface such as a road, the simplest method is to use a ruled thread or a ruler such as a tape measure. Was.

[0003] The scoring thread is wound around a scoring container filled with black ink or paint for display, and is drawn out at the time of use, stretched between two target points, and then stitched. Flip and draw a straight baseline once with black ink or paint for display. Thereafter, along the straight base line, a drawer, a road cutter, or the like is traveled to draw a white line or cut a straight line.

On the other hand, in the case of using a ruler, this ruler is stretched and attached between two points measured and determined in advance, and a base line of a white line is once drawn with black ink along the ruler. As in the case of the scribe thread, the drawer and the road surface cutter were moved along the straight base line.

[0005]

However, when using the above-described scribing thread or ruler, there are the following problems. (1) First, in the case of these tools, it is not impossible to perform the operation by one worker, but generally, two to two or more workers are required. That is, since the scribing container is usually small and small and has little self-holding force, it is necessary for one person to hold the scribing container and the other person to pull the scoring thread to the target point. Also, even with a ruler such as a tape measure, it is different if you hit a stud for fixing on the road surface and scratch one end of it, but usually one person also holds one end,
The other had to pull the other end to the destination. (2) Next, in the case of a ruled thread or a ruler, the length is limited,
At most, the limit was around 20m. Therefore, for each of these distances, the writing of the base line of the white line is repeated,
It had to be extended, it was quite troublesome, and the workability was poor. (3) Draw this baseline once, then the original work,
When performing operations such as displaying a white line or cutting, a baseline writing operation occupies about 20% of all the operations, resulting in a significant decrease in workability.

On the other hand, in place of such a simple method using a scribing thread or a ruler, a display device and a display method of a linear base line partially using a laser beam have already been proposed. It is not a general one that is expensive, can be easily used, and uses many devices and devices.

The present invention has been made in view of such a conventional situation. Although the present invention includes a laser light transmitter and a laser light receiver, the laser light receiver particularly has a complicated structure such as electronic equipment. It is an object of the present invention to provide an extremely inexpensive and practical baseline display unit having a physical structure such as a simple box shape.

[0008]

According to a first aspect of the present invention, there is provided a base line display unit for displaying a straight base line between two separated points of an object, wherein the base line display unit is provided on one side of the two points. A portable laser light transmitter that emits a linear laser light on the other side of the two points, and a movable laser light transmitter that is installed on the other side of the two points to receive the linear laser light from the laser light transmitter, And a laser light receiving unit having a light receiving screen on which the reference line is displayed.

According to a second aspect of the present invention, in the base line display unit according to the first aspect, the light receiving screen of the laser beam receiving section is made of a translucent or transparent resin plate or a colored resin plate. is there.

According to a third aspect of the present invention, the light receiving screen of the laser light receiving section is formed of a milky white translucent resin plate on the side where the linear laser light is incident, and a black transparent or translucent resin plate on the opposite side. The baseline display unit according to claim 1, wherein:

According to a fourth aspect of the present invention, there is provided the baseline display unit according to the first, second or third aspect, wherein the light receiving screen of the laser beam receiving section is installed at an angle.

[0012]

FIG. 1 shows an example in which a base line display unit according to the present invention is applied to a line drawing device for drawing a white line on a road. In the figure, 10 is a laser beam transmitter, 20 is a laser beam receiver, and 30 is a drawer.

The laser light transmitter 10 is a relatively small and portable type. For example, as shown in FIG.
And an upright portion 12. On one side surface of the upright portion 12,
A laser light transmission unit 13 including a laser diode (LD) for emitting a plurality of linear laser beams in a vertical direction is provided. Although not shown, a drive source such as a battery, a circuit board such as a transmission circuit, and the like are incorporated therein, and a flashing switch for transmitting a laser beam is provided on a part of the outside. .

The laser light transmitter 10 has the structure shown in FIG.
When a straight white line is drawn between two separated points on the road (object) as shown in FIG. This installation can be performed very easily, since the worker only needs to bring the portable laser light transmitter 10 to the point and simply place it. The transmission form of the linear laser light r transmitted from the laser light transmitter 10 may be one that constantly transmits, or one that intermittently blinks.

On the other hand, the laser light receiving section 20 has the configuration shown in FIGS.
As shown in FIG. 4, a box-shaped casing 21 having an opening 22 formed on the side from which the linear laser light r from the laser light transmitter 10 is sent, and an opening 22 on the upper surface side of the casing 21 It is installed on the opposing inclined portion and receives the linear laser light r from the laser light transmitter 10,
Light receiving screen 23 on which the light receiving reference line 24 is displayed
Consists of The light receiving screen 23 is, for example, a translucent resin plate 23a of milky white on the incident side (inside) and black transparent or transparent on the opposite side (outside) so that the display point r ′ irradiated with the linear laser light r clearly appears. It is a translucent resin plate 23b.

The laser light receiving section 20 has a
As shown in the figure, it is mounted on the front side of the wire drawing device 30 at the height where the linear laser light r from the laser light transmitter 10 is received, and on the portion that can be easily seen from the worker side. .

In order to draw a white line on the road by the drawer 30 with the base line display unit, first, a portable laser beam is transmitted to one side between two separated points where the white line is to be drawn. The device 10 is installed, and the linear laser light r is transmitted toward the other side exactly between the two points.

On the other hand, the drawer 30 is moved to the other side between the two separated points so that the laser light receiving section 20 is directed toward the installed laser light transmitter 10 and the laser light transmitter Receiving screen 2 for linear laser light r from 10
The display point r ′ for the reference line 2 is, as shown in FIG.
4 so that they are lined up neatly. In other words, when the display points r 'of the linear laser light r are neatly aligned on the reference line 24,
This means that the drawer 30 is correctly oriented to the point on the laser light transmitter 10 side.

Therefore, the operator only has to push the drawer 30 in such a manner that the display point r 'of the linear laser light r does not deviate from the reference line 24 of the light receiving screen 23. If the drawer 30 deviates from the base line represented by the linear laser light r, the display point r 'of the linear laser light r deviates from the reference line 24 of the light receiving screen 23 as shown in FIG. Therefore, quick correction is possible. For this operation, the laser beam transmitter 10 is installed first, and then the operator returns and pushes the wire drawing device 30, and one worker can easily cope with the operation. Here, the light receiving screen 23 has a display point r of the linear laser light r when the incident side of the linear laser light r is a milky white translucent resin plate 23a and the opposite side is a black transparent or translucent resin plate 23b.
'Clearly appears, so that it can be sufficiently recognized not only at night but also in bright sunlight such as daytime.

The laser beam transmitter 10 has a plurality of laser beam transmitters 1 mounted on the upright portion 12 so that the displacement can be easily visually recognized.
3, the present invention may include a single laser light transmitting unit 13 as shown in FIG. 6, and in particular, a laser light gradually expands as a vertical slit light beam. Good. Further, the light receiving screen 23 of the laser light receiving unit 20 is not limited to the case of the above-described double structure.
As shown in (1), a single translucent or transparent resin plate or a colored resin plate may be used, and this can sufficiently cope with nighttime work and the like.

Further, monitoring (monitoring) of the light receiving screen 23 of the laser beam receiving section 20 is performed by an image pickup device 41 such as a small CCD camera installed in the drawing device 30, and this data is also installed in the drawing device 30. At the same time, processing is performed by a built-in controller 42 such as an image processing circuit.
It is also possible to automatically operate the drawer 30.

In the above-described embodiment, the base line display unit of the present invention is applied to the drawer 30, but the present invention is not limited to this. The present invention can be applied to a road surface cutter for cutting and other devices which need to move linearly.

[0023]

As is apparent from the above description, according to the baseline display unit of the present invention, the following excellent effects can be obtained.

(1) First, although a laser light transmitter and a laser light receiving unit are provided, the laser light receiving unit has no complicated structure such as electronic equipment at all, and is simply a casing of a box. Since a light receiving screen made of a resin plate is provided, there is almost no risk of failure, and the price is extremely low and the utility is high.

(2) Further, since the laser light transmitter is a portable and small-sized one, the worker only has to carry it to the installation point and use it at the time of its use. In the case of an object to be applied such as a wire drawer attached with, it is only necessary to move the display screen of the light receiving screen so that the display point of the linear laser light does not deviate from the reference line. This makes it easy to respond.

(3) Needless to say, it is not necessary to draw a ruled line or a black line or the like in advance when drawing an original white line, as in the conventional case. This is completely unnecessary, and a great improvement in workability can be obtained.

(4) Although depending on the performance of the laser light transmitter, the linear laser light reaches a considerable distance, so that the distance between two points on the base line can be increased. As a result,
The number of times of installation of the laser light transmitter and positioning of the laser light receiving portion of the object to be applied may be small, and improvement in workability from that point can be expected.

(5) Further, if the light receiving screen of the laser beam receiving section is monitored by an image pickup device such as a CCD camera and the data is processed by a built-in controller such as an image processing circuit, the work is greatly reduced. It is also possible to achieve efficient automation.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an example in which a base line display unit according to the present invention is applied to a road drawing device.

FIG. 2 is a perspective view showing an example of a laser light transmitter of the baseline display unit of FIG. 1;

FIG. 3 is a vertical sectional side view showing an example of a laser light receiving section of the baseline display unit of FIG. 1;

FIG. 4 is a plan view showing a state in which a display point of a linear laser beam on a light receiving screen coincides with a reference line in a laser beam receiving section of the baseline display unit of FIG. 1;

5 is a plan view showing a state in which a display point of a linear laser beam on a light receiving screen is shifted from a reference line in a laser beam receiving unit of the baseline display unit of FIG. 1;

FIG. 6 is a perspective view showing another example of the laser beam transmitter of the baseline display unit of FIG. 1;

FIG. 7 is a partial vertical sectional side view showing another example of the laser receiving unit of the baseline display unit of FIG. 1;

FIG. 8 is a schematic explanatory view showing another example in which the base line display unit according to the present invention is applied to a road drawing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 laser light transmitter 11 pedestal portion 12 upright portion 13 laser light transmitting portion 20 laser light receiving portion 21 casing 22 opening 23 light receiving screen 23a milky white translucent resin plate 23b black transparent or translucent resin plate 24 reference line 30 drawing R r Linear laser light r 'Display point of linear laser light

Claims (4)

[Claims] 1. A base line display unit for displaying a straight base line between two separated points of an object, the base line display unit being installed on one side of the two points and capable of emitting a linear laser beam on the other side of the two points. A laser having a portable laser light transmitter and a light receiving screen which is movably installed on the other side of the two points and receives the linear laser light from the laser light transmitter, and displays a reference line for receiving the laser light. A baseline display unit comprising an optical receiving unit. 2. The baseline display unit according to claim 1, wherein the light receiving screen of the laser beam receiving unit is made of a translucent or transparent resin plate or a colored resin plate. 3. A light-receiving screen of the laser beam receiving section, wherein a side on which the linear laser beam is incident is a milky white translucent resin plate,
The base line display unit according to claim 1, wherein the opposite side is made of a black transparent or translucent resin plate. 4. The light receiving screen of the laser beam receiving unit is installed at an angle.
Or the baseline display unit according to 3.