JP3190608B2 - Information board cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for cleaning information boards (LED information boards) using LED lamps, such as road information boards installed on roads and information providing monitors installed in buildings. It relates to a cleaning device.

[0002]

2. Description of the Related Art About ten years have passed since the installation of LED road information boards.

In the LED road information board, a display element array in which LED lamps are arranged in a dot matrix and a display unit including a drive circuit for controlling the driving of each LED lamp are further arranged in a matrix. A large-screen display unit, and supplies display data to the display unit, and turns on or blinks a lamp at a predetermined position of the LED lamp group to display desired characters and figures. Is now widely used.

[0004] In such a road information board, maintenance (cleaning and the like) is managed by a manager in order to smoothly provide information to the user.

[0005]

By the way, in cleaning the LED road information board, the housing of the information board has no irregularities and can be cleaned by cleaning with a rag or the like. Is maintained,
At present, it is difficult to clean an LED lamp as a display element with a rag or the like, and it is not implemented.

That is, as shown in FIGS. 6 and 7, in order to prevent the sunlight from directly hitting the lamp head around the LED lamps 101... Improvement), louvers (eaves) 102
At present, the louver 102 is obstructed and cannot be cleaned with a rag or the like, and is left in a dirty state.

[0007] Here, the road information board is usually installed around the road, and hydrocarbon-based black soot and the like contained in the exhaust gas of the vehicle traveling on the road adhere to the LED lamp of the display unit. In addition, dust and the like may be contaminated as L.
Attaches to ED lamp. Among these dirt, dirt due to soil and the like tends to be washed away by rain, etc., but hydrocarbon-based black soot does not flow down and adheres to the LED lamp head.
The black soot or the like accumulates and reduces the amount of visible light transmitted.

[0008] If such black soot and other stains are left unremoved, the visibility of the road information plate is reduced, and it becomes difficult to provide road information. Since the amount of light output from the lamp may be reduced to about half that in a normal state (clean state), it is desired to provide an apparatus capable of cleaning the lamp.

As a method of cleaning the LED lamps arranged in a dot matrix on the road information board, a method of wiping off the lamp heads one by one can be considered. It is not feasible because it takes time.

For example, if the number of dots on the road information board is 128
In the case of .times.336 dots (standard size), the number of cleaning points is about 43,000, and if it is estimated that cleaning time of 10 seconds per lamp is required, it takes about 120 hours for the entire information board. .

As another method, it is conceivable to use a compressed air or the like to blow off dirt such as black soot adhering to the LED lamp. In this case, a considerably large-scale device equipped with a compressor is used for road information. It is necessary to attach one by one to each plate, and it is doubtful whether black soot or the like can be actually blown off by compressed air or the like.

Further, as another method, a method of removing dirt such as black soot by rotating a huge brush such as a car washer of an automobile can be considered. In this case, the giant brush can be moved in a place where a car passes, but a handrail or the like for maintenance is installed in front of the road information board, which is difficult to realize. As a method of avoiding this, it is conceivable to attach one cleaning device provided with a giant brush to the road information board, but in this case, a storage method when the cleaning device is not used becomes a problem. Further, when the mechanical part (vibration system) is installed on the information board, a new problem that the reliability of the mechanical system of the information board itself is reduced also occurs. Moreover,
It is not known whether the head portion of the LED lamp located at the back of the louver can be cleaned by such rotation of the huge brush.

The present invention has been made in view of such circumstances, and a novel cleaning method capable of easily and quickly cleaning LED lamps arranged in a dot matrix on a road information board or the like. The purpose is to provide the device.

[0014]

First, FIGS. 1 and 2 show an example of a cleaning device used for an information board in which display units in which LED lamps are arranged in a dot matrix form are further arranged in a matrix form. So, brush stand 10
The brush bristles 11 are planted at a pitch corresponding to the arrangement pitch of the LED lamps on the information board (see FIG. 6). A device having a driving means 2 for giving a circular motion or a reciprocating motion to the motor is conceivable.

[0015]

[0016]

[0017]

Here, in this type of road information board,
In addition to the information plate having a structure in which the lattice-shaped louvers 102 are installed as shown in FIG. 6, there is also an information plate in which flat-plate wide-angle louvers 202 are installed as shown in FIG. When a cleaning brush 1 as shown in FIG. 2, that is, a brush having the same number of brush bristles in the vertical and horizontal directions (16 × 16) as shown in FIG. Even when the tip touches the head of the LED lamp, when the entire cleaning brush is vibrated,
A problem arises in that the tips of the brush bristles escape laterally and the head of the LED lamp cannot be cleaned cleanly.

In order to solve such a problem, the present invention relates to a cleaning device used for an information board in which a display unit in which LED lamps are arranged in a dot matrix is further arranged in a matrix. 8, as shown in FIG. 9, brush bristles 31
A cleaning brush 31 which is planted in the vertical direction at a pitch equal to the arrangement pitch of the LED lamps and in the horizontal direction at a pitch of ２ of the lamp arrangement pitch;
And a driving means 2 that supports the brush stand 30 and applies a circular motion or a reciprocating motion to the entire cleaning brush. According to the information board cleaning device of the present invention, as the cleaning brush, the pitch of the bristles of the brush is set to a pitch equal to the arrangement pitch of the LED lamps in the vertical direction, and １ ／ of the lamp arrangement pitch in the horizontal direction. Since the cleaning brush set at the pitch is used, the problem caused by the escape in the lateral direction described above can be solved, and clean cleaning can be performed. In addition, the louver of the information board is usually a resin molded article such as polycarbonate and has a property of being weak to an alkali or an organic solvent. Since the louver can be physically removed, there is no danger of deterioration of the louver.

In the information board cleaning device of the present invention, the location where the bristles of the brush are planted corresponds to the LED lamp of one display unit in the vertical direction in consideration of the ease of handling and the total weight of the brush. It is preferable to use 16 locations and 31 locations in the horizontal direction. The planting pitch is 9.9 mm in the vertical direction, which is the same as the pitch of the LED lamps usually used in the road information board, and ９５ of the pitch in the horizontal direction, 4.95 mm.

The bristles of the brush used in the information board cleaning device of the present invention include, for example, chemical fibers such as nylon 6-6. The length (hair length) of the brush bristles is preferably about 15 mm to 30 mm in consideration of the distance from the front of the louver to the head of the LED lamp, the ability to remove dirt, and the like. When chemical fibers such as nylon 6-6 are used as the bristles of the brush, the thickness is 0.15 mm to 0.40 m.
The range of m is good.

When the diameter of the LED lamp used in the information board (diameter as viewed from the front side) is 7.5 mm, the diameter of the brush hair is 2.5 mm to 4 mm, and preferably 2.5 mm to 4 mm. 3 mm is good. The reason for setting the brush hair planting diameter at a maximum of 4 mm is that the hair is pressed in due to the planting pitch, and if the planting diameter is 4 mm or more, there is a possibility that cracks may occur in the planted place. by.

Further, in the information plate cleaning apparatus of the present invention, a handy type driving mechanism 2 as illustrated in FIGS. 1 and 8 is applied as a driving means for applying a circular motion or a reciprocating motion to the cleaning brush. In addition, the cleaning work of the LED lamp is simplified, and the workability is improved.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

First, an example of the information plate cleaning device will be described with reference to FIGS.

The cleaning device for an information board of this example has a cleaning brush 1 having a square front shape and a brush base 10 for supporting the cleaning brush 1 to rotate (or directly move) the entire cleaning brush 1.
And a hand-held type driving mechanism 2 that provides the following.

The brush base 10 of the cleaning brush 1 is made of PVC.
Is a rectangular parallelepiped resin molded product obtained by processing resin such as 159 mm square x 10 mm thick, and brush bristles 11 on the front side.
11 are planted.

The bristles 11 of the brushes are made of nylon 6-6 and have a diameter of 0.3 mm. The bristles 11 of each brush have a bristle length of 10 mm to 15 mm. Is planted on the brush stand 10.

In this example, the brush bristles 11
The planting diameter (hole diameter) is 4 mm, and the planting places are 16 × 16 places, the same number as the arrangement of the LED lamps arranged in one display unit on a general road information board. Further, similarly, the planting pitch is set to the same value as the LED lamp arrangement pitch usually used in the road information board; 9.9 mm.

Next, the essential structure of the drive mechanism 2 for imparting a rotating motion or a reciprocating motion to the cleaning brush 1 will be described below with reference to FIGS.

First, as shown in the schematic diagram of FIG. 4, the mechanism applied to this example is a motor 21, a flywheel 22 and an eccentric cam 23 attached to a rotating shaft 21a thereof.
And a fixing device 20 to which the cleaning brush 1 is attached on the front side.

The fixing device 20 is supported by a support member 24 made of a flexible material such as rubber, and is arranged with a degree of freedom with respect to the motor 21 side. A rectangular recess 20a (or 20b) for restricting the movement of the eccentric cam 23 is formed on the back side of the fixing device 20.

In the mechanism shown in FIG.
When 1 rotates, the center of gravity of the eccentric cam 23 attached to the rotating shaft 21a moves. Here, as shown in FIG. 5A, when the concave portion 20a formed in the fixing device 20 has a structure for fixing the movement of the eccentric cam 23 in four directions,
Since the energy due to the movement of the position of the center of gravity of the eccentric cam 23 must be absorbed somewhere, either the fixed device 20 or the motor 21 needs to vibrate, and depending on the weight ratio of the fixed device 20 and the motor 21, Will move more, but usually the motor 21 side is heavy,
The fixing device 20 makes a circular motion (orbital motion).

On the other hand, the recess 20 formed in the fixing device 20
As shown in FIG. 5B, when b has a structure in which only two directions of the eccentric cam 23 are fixed, also in this case, the energy due to the movement of the center of gravity of the eccentric cam 23 must be absorbed somewhere. However, since the eccentric cam 23 slides in the direction of the arrow in the drawing to convert the force in two directions in which the movement is not fixed into heat energy, the energy to be absorbed is in the two directions on the fixed side. 20 reciprocates (vertically in the figure).

In the above description, the circular motion and the reciprocating motion are different mechanisms, but the basic structure of the fixing device 20 is as follows.
If the structure (reciprocating motion) shown in FIG. 5B is used, and a stopper or the like for selectively fixing the remaining two directions of movement is provided on this structure, that is, a fixing device for fixing the movement in only two directions, the structure is such that By the switching operation of the stopper, it is possible to constitute a cleaning device capable of arbitrarily selecting the rotational movement and the direct movement of the brush with one drive mechanism.

Next, an embodiment of the present invention will be described with reference to FIGS.
It will be described based on. FIG. 8 is an overall perspective view showing the structure of an information board cleaning device according to an embodiment of the present invention, and FIG. 9 is a front view (A) and a plan view (B) of a cleaning brush used in the embodiment. .

The information plate cleaning device of this embodiment is a cleaning device intended for cleaning a road information plate having a wide-angle louver structure. As the cleaning brush, the brush bristles 31,. The number in the vertical direction is 16 places, the same number as the number of LED lamps arranged in one display unit, the number in the horizontal direction is 31 places, which is twice the number of lamps arranged, and the vertical pitch of planting is set in the road information board. The same pitch as the arrangement of LED lamps usually used; 9.9m
The cleaning brush 3 is characterized in that the cleaning brush 3 is set to m and the pitch in the horizontal direction is そ の of the pitch;

In this embodiment, the cleaning brush 3
Is held by the handy type driving mechanism 2 described above,
A rotational motion (or direct motion) is given by the drive mechanism 2. Further, as the brush base 30 of the cleaning brush 3, a rectangular parallelepiped resin molded product obtained by processing a resin such as PVC into a 159 mm square × 10 mm thick is used. Further, the bristle 11 of the brush is made of nylon 6-6 and has a diameter of 0.3 mm, and the bristle 11 of each brush is set so that the bristle length becomes 12 mm. 1
Planted at 0.

In each of the above embodiments, the number of brush hairs to be planted is one display unit of the road information board. However, the present invention is not limited to this. It may be a number corresponding to ２ times, ４ times, or the like.

Further, the dimensions of the brush bristle planting pitch, planting, bristle thickness, bristle length and the like are not limited to the above-mentioned values, but may be arbitrarily determined according to the road information board to be cleaned. Is appropriately adopted.

Here, the cleaning device of the present invention is applicable not only to cleaning of road information boards, but also to cleaning of LED type information boards installed in buildings or the like and providing information other than road information.

The information plate cleaning apparatus of the present invention employs a structure for giving a circular motion (or a reciprocating motion) to the entire cleaning brush. In addition, the brush bristles are planted in units (bundles). It is also conceivable to employ a structure in which the brush bristles of each unit are individually rotated (rotated) using gears or the like.

[0043]

As described above, according to the information board cleaning apparatus of the present invention, a cleaning brush in which bristles are planted corresponding to the LED lamps installed on the information board,
Since the cleaning brush is provided with a driving means for giving a circular motion or a reciprocating motion to the entire cleaning brush, a portion of the road information board or the like which has conventionally been difficult to clean, that is, an LED lamp located behind the louver of the information board. Dirt attached to the head can be removed. In addition, since dirt can be physically removed by the movement of the brush, there is no need to use soap or the like, and there is no possibility that the louver will be adversely affected.

Moreover, since the spacing of the brush bristles in the horizontal direction of the cleaning brush is reduced to half, it is possible to provide an information plate cleaning device suitable for cleaning road information plates and the like provided with a wide-angle louver.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an example of an information board cleaning device.

FIG. 2 is a front view (A) and a side view (B) showing only a cleaning brush used in the information board cleaning device of FIG. 1;

FIG. 3 is an explanatory view of the operation of the information board cleaning device of the present invention.

FIG. 4 is a diagram schematically showing a main structure of a driving mechanism 2 used in the embodiment of the present invention.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a diagram partially showing a structural example of an LED type road information board;

FIG. 7 is a diagram partially showing another example of the structure of the LED type road information board;

FIG. 8 is an overall perspective view showing the structure of an information board cleaning apparatus according to an embodiment of the present invention.

FIG. 9 is a front view (A) and a side view (B) showing only a cleaning brush used in the embodiment.

[Explanation of symbols]

 1,3 Cleaning brush 10,30 Brush stand 11..11,31..31 Bristle of brush 2 Drive mechanism 20 Fixing device 20a, 20b Depression 21 Motor 21a Rotating shaft 22 Flywheel 23 Eccentric cam 101..101 LED lamp 102 Louver 202 Wide-angle louver

Claims (2)

(57) [Claims] 1. A cleaning device used for an information board in which a display unit in which LED lamps are arranged in a dot matrix is further arranged in a matrix, wherein bristles of a brush are provided on a brush base and LED lamps are arranged in a vertical direction. A cleaning brush planted at a pitch equal to the arrangement pitch of the cleaning brushes and laterally planted at a pitch of の of the lamp arrangement pitch, and a circular motion or A cleaning device for an information board, comprising a driving means for giving a reciprocating motion. 2. The information board cleaning device according to claim 1, wherein the bristles of the brush are planted at 16 locations in the vertical direction and 31 locations in the horizontal direction, and the vertical planting pitch is 9.9 mm. 4.95 horizontal planting pitch
A cleaning device for information boards, characterized in that it is set to mm.