JP2001222233A - Led display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the degradation in visibility by the contamination of an LED display section with rainwater or the like. SOLUTION: The outer peripheral edge on a front surface 21 side of the top surface 22 of a housing 2 of the LED display device 1 provided with the LED display section 3 on the front surface 21 of the housing 2 is provided with a projecting part 4 and the rainwater or the like of the top surface 2 is shielded by the projecting part to prevent the outflow of the rainwater or the like to the LED display section 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED display device.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 8, an LED display device 10 has an LED display section 12 in which LEDs (not shown) are arranged in a matrix on a surface 111 of a housing 11.
And is used outdoors as an information display panel. And the LED display device 10 is usually
It is often installed in dusty places such as around roads, and is also installed in snowfall areas.

[0003]

In such an LED display device 10, the top surface 11 of the housing 11 during rainfall.
2, the rainfall locally forms a water flow r from the top surface 112 and flows down the surface of the LED display unit 12, so that the dust adhered to the surface of the LED display unit 12 by the water flow of the rainwater partially The surface of the LED display unit 12 is washed out and the surface of the LED display unit 12 looks spotty (see FIG. 9), and the dust attached to the top surface 112 flows to the LED display unit 12 and re-adheres to the surface of the LED display unit 12 to make it dirty. become. As a result, there is a problem that the display quality of the LED display unit 12 is reduced and the visibility is impaired.

[0004] In addition, when snow accumulates on the top surface 112 of the housing 11 in a snowfall area, a local water flow including dust is generated when the snow s melts, and the LED display unit 1
2 Further, in a cold region, when the melted water stream freezes and causes an icicle i to be generated on the LED display section 12, visibility is also impaired (see FIG. 10).

The present invention has been made in view of the above problems, and an object of the present invention is to provide an LED display device capable of preventing the visibility of the LED display portion from being impaired due to contamination of the LED display portion with rainwater or the like. .

[0006]

According to the present invention, there is provided an LED display device provided with an LED display portion on a surface of a housing.
A projection is formed on the outer peripheral edge of the top surface of the housing to prevent leakage of rainwater or the like to the LED display unit.

According to the present invention, during rainfall or snowfall, rainwater or snowmelt on the top surface is not blocked by the projections and does not flow into the surface of the housing or the LED display.
Therefore, when the local water flow of rainwater or snowmelt flows into the LED display unit, the dust attached to the surface of the LED display unit is partially washed away and looks like spots, or the dust attached to the top surface is displayed on the LED display unit. It does not flow to the part and does not reattach to the surface of the LED display part to be soiled, thereby preventing the visibility of the LED display part from being impaired.

In the present invention, if the projection is formed at a height exceeding the snowfall at the installation position of the LED display device,
It is possible to prevent the snowmelt water from flowing into the LED display portion beyond the protrusion.

According to the present invention, in an LED display device having an LED display portion provided on a surface of a housing, a top surface of the housing is formed on an inclined surface in which the height of the outer peripheral edge on the front side is higher than the height of the outer peripheral edge on the back side. The feature is to prevent rainwater or the like from flowing out to the LED display unit.

According to the present invention, at the time of rainfall or snowfall, the rainwater or snowmelt on the top surface flows to the back surface along the inclined surface of the top surface, and does not flow into the surface of the housing or the LED display. For this reason, it is possible to prevent the visibility of the LED display unit from being impaired due to the local flow of rainwater or snowmelt flowing into the LED display unit.

According to the present invention, in an LED display device having an LED display portion provided on a surface of a housing, a plurality of grooves are formed on the top surface of the housing from an outer peripheral edge on one side to an outer peripheral edge on another side. It is characterized in that rainwater or the like is prevented from flowing to the part.

According to the present invention, the rainwater or snowmelt on the top surface flows to the side surface along the groove formed on the top surface, and does not flow into the surface of the housing or the LED display. For this reason, it is possible to prevent the visibility of the LED display unit from being impaired due to the local flow of rainwater or snowmelt flowing into the LED display unit.

According to the present invention, in an LED display device having an LED display portion provided on a surface of a housing, an upper portion of the surface of the housing is projected forward of the LED display portion, and an LED display is continuously provided on a lower edge of the upper portion of the surface. The present invention is characterized in that a drooping piece is provided which extends substantially on the extension line of the upper end edge of the portion to prevent outflow of rainwater or the like to the LED display portion.

According to the present invention, even if rainwater or snowmelt on the top surface flows to the front surface side of the housing, the rainwater or the like is continuously formed on the upper surface protruding forward from the LED display portion and on the upper surface. Since it flows down along the hanging piece, it does not flow into the LED display unit. For this reason, it is possible to prevent the visibility of the LED display unit from being impaired due to the local flow of rainwater or snowmelt flowing into the LED display unit.

In the present invention, if at least the top surface of the housing is formed of a material having good thermal conductivity, LE
The heat inside the D display device can be transmitted to the top surface, and during snowfall, it is possible to prevent snow from accumulating on the top surface and snow accumulation, promote snow melting, and prevent the formation of icicles. it can. Here, aluminum is preferably used as a material having good thermal conductivity.

In the present invention, if an air passage communicating between the inside and the outside of the housing is formed along the back surface on the upper surface and the back surface on the top surface of the housing, heat inside the LED display device is transferred to the upper surface of the housing. And it can be guided to the top surface and transmitted efficiently, and at the time of snowfall, it is possible to prevent snow accumulation and snow accumulation on the top surface etc., promote snow melting, and prevent the occurrence of icicles .

In the present invention, if a heater is provided at least on the top surface, the heater is turned off during snowfall.
By performing the N operation, the top surface is heated, so that snow accretion and snow accumulation on the top surface can be reliably prevented, snow melting can be promoted, and generation of icicles can be reliably prevented. Here, it is preferable that the heater be provided with a temperature sensor in the LED display device and be turned ON when the temperature sensor detects a certain temperature.

[0018]

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

FIG. 1 shows a first embodiment of an LED display device 1 according to the present invention.

The LED display device 1 includes a housing 2
And an LED display unit 3 provided on the front surface 21 of the housing 2. The LED display unit 3 is configured by arranging LEDs in a matrix, though not shown in detail. The top surface 22 of the housing 2 is provided with a projection 4 on the outer peripheral edge on the front surface 21 side.

For this reason, during rainfall, the precipitation that reaches the top surface 22 of the housing 2 in the LED display device 1 is
It does not flow into the front surface 21, that is, the LED display unit 3, being blocked by the projection 4. Also, the top surface 2 of the housing 2
Also, the snowmelt water in the case where the snow is deposited on 2 does not flow into the LED display section 3 because it is blocked by the projections 4. Therefore, the dust adhered to the surface of the LED display part by the local water flow is partially washed away, and does not appear as spots,
In addition, the dust adhered to the top surface does not re-adhere to the surface of the LED display unit and becomes dirty. As a result, it is possible to prevent the visibility of the LED display unit from being impaired.

In a cold region, even if the snowmelt water freezes, no icicle is generated on the LED display unit 3.

In this case, the height of the projection 4 is preferably set to a height higher than that, for example, about 50 cm in consideration of the amount of snowfall at the place where the LED display device 1 is installed.

FIG. 2 shows a second embodiment of the LED display device 1 of the present invention.

The top surface 22 of the housing 2 of the LED display device 1 is formed on an inclined surface 22A in which the height of the outer peripheral edge on the front surface 21 side is higher than the height of the outer peripheral edge on the back surface 23 side.

Also in this embodiment, the snowmelt water that has reached the top surface 22 of the housing 2 of the LED display device 1 at the time of precipitation or snowfall flows down along the top surface 22 (inclined surface 22A), and the surface of the housing 2 It does not flow into the LED display 21 or the LED display 3. Therefore, rainwater or the like is not
Can be prevented from lowering the visibility of the LED display unit 2 due to the flow into the device.

FIG. 3 shows a third embodiment of the LED display device 1 of the present invention.

In the LED display device 1, a plurality of grooves 22B are formed on the top surface 22 of the housing 2 from one side of the housing 2 to the other side.

In the case of this embodiment, the snowmelt water that has reached the top surface 22 of the housing 2 at the time of rainfall or snowfall flows down from the side surface of the housing 2 along the groove 22B formed in the top surface 22. It does not flow into the front surface 21 or the LED display unit 3. Therefore, rainwater or the like is not
Can be prevented from lowering the visibility of the LED display unit 2 due to the flow into the device.

FIG. 4 shows a fourth embodiment of the LED display device 1 of the present invention.

In the LED display device 1, the upper surface 211 of the housing 2 is projected forward of the LED display unit 3, and the upper surface 211 of the housing 2 is substantially continuous with the upper surface of the LED display unit 3. A reaching piece 212 is provided.

In the case of this embodiment, the snow melting water at the time of rainfall or snowfall that has reached the top surface 22 of the housing 2
1, the upper surface 211 and the hanging pieces 21
Since 2 is located ahead of the LED display unit 3, it does not flow into the LED display unit 3. Therefore, L due to rainwater or the like flowing into the LED display unit 2
A decrease in the visibility of the ED display unit 2 can be prevented.

In this case, the lower end of the hanging piece 212 is L
Since it is located on a substantially extended line of the upper end edge of the ED display unit 3, the visibility of the LED display unit 3 is not hindered.

The housing 2 is usually formed of a steel plate or a stainless steel plate. As shown in FIG. 5, the housing 2 has a hanging piece 212, a top surface 211 and a top surface 22.
The plate member 5 extending over the entire surface can be formed of a material having good thermal conductivity, for example, an aluminum plate. By forming the hanging piece 212, the upper surface 211, and the top surface 22 with the plate member 5 made of a material having good thermal conductivity, the heat inside the housing 2 can be dissipated by the hanging piece 212, the upper surface 211, and the top surface 22. Can be transmitted to the plate member 5 which forms. As a result, at the time of snowfall, it is possible to prevent snow from accumulating on the top plate 22 and snow accumulation, promote snow melting, and prevent the formation of icicles from the hanging pieces 212.

In this embodiment, the hanging piece 2
12, the upper surface 211 and the top surface 22 are formed of the plate material 5 made of a material having good thermal conductivity. However, in the above-described embodiments of FIGS. It may be formed of a good material.

On the other hand, as shown in FIG. 6, the air passage 6 communicating the inside and the outside of the housing 2 can be formed along the back surface of the upper surface 211 of the housing 2 and the back surface of the top surface 22. That is, the partition wall 61 is disposed at a fixed interval between the upper surface 211 of the housing 2, the top surface 22, and the upper portion of the back surface 23, and the upper surface 211, the top surface 22, and the back surface of the housing 2 are provided. The air passage 6 is formed by the partition wall 23 and the partition wall 61. Here, a rag 23a is formed on the upper part of the back surface 23 of the housing 2.

Thus, the upper surface 211 and the top surface 2
By forming the air passage 6 communicating the inside and the outside of the housing 2 along the back surface of the housing 2, heat inside the housing 2 is transferred through the air passage 6 to the upper surface 211 and the top surface 22.
Can be communicated efficiently. As a result, at the time of snowfall, it is possible to prevent snow from accumulating on the top plate 22 and the like and to prevent snow accumulation, promote snow melting, and furthermore,
12 can be prevented from being generated.

Further, as shown in FIG.
The heater 7 can also be attached over the upper surface 211 and the top surface 22. In this case, the heater 7 is LE
The D display device 1 may be provided with a temperature sensor (not shown), and may be activated when the temperature sensor detects a certain temperature.

As described above, the hanging piece 212 and the upper surface 21
By providing the heater 7 over the top 1 and the top surface 22, it is possible to reliably prevent snow from accumulating on the top plate 22 and the like during snowfall, and promote snow melting,
Further, generation of icicles from the hanging pieces 212 can be reliably prevented.

In this embodiment, the hanging piece 2
12, the case where the heater 7 is provided over the upper surface 211 and the top surface 22 has been exemplified.
In the embodiment, the heater 7 may be provided on the top plate 22.

[0041]

As described above, according to the present invention, it is possible to prevent rainwater, snowmelt, and the like from flowing into the LED display unit from the top surface of the housing.
To prevent dust adhering to the surface of the D display part from being partially removed and appearing as spots, and preventing the dust adhering to the top surface from being washed away by water flow and re-adhering to the surface of the LED display part and becoming dirty. And visibility can be prevented from being impaired.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view schematically showing a first embodiment of an LED display device of the present invention.

FIG. 2 is a longitudinal sectional view schematically showing a second embodiment of the LED display device of the present invention.

FIG. 3 is a longitudinal sectional view schematically showing a third embodiment of the LED display device of the present invention.

FIG. 4 is a longitudinal sectional view schematically showing a fourth embodiment of the LED display device of the present invention.

FIG. 5 is a longitudinal sectional view schematically showing a modification of the fourth embodiment of the LED display device.

FIG. 6 is a longitudinal sectional view schematically showing another modification of the fourth embodiment of the LED display device.

FIG. 7 is a longitudinal sectional view schematically showing another modified example of the fourth embodiment of the LED display device.

FIG. 8 is a longitudinal sectional view schematically showing a conventional LED display device.

FIG. 9 is a front view illustrating a case where local rainwater flows down on an LED display unit in a conventional LED display device.

FIG. 10 is a vertical cross-sectional view illustrating a case in which snowfall on the top surface melts and freezes to form an icicle in a conventional LED display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LED display device 2 Housing 21 Front surface 211 Upper surface 22 Top surface 22A Inclined surface 22B Groove 23 Back surface 3 LED display part 4 Projection part 5 Hanging part

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 5C094 AA03 AA38 BA23 CA18 DA05 HA01 5C096 AA01 BA04 CC06 DA03 DA10 FA03 FA07 5F041 AA14 DC07 DC81 FF06 5G435 AA01 AA11 AA13 BB04 CC09 EE03 EE12 GG43 LL19

Claims (8)

[Claims] 1. An LED display device having an LED display unit provided on a surface of a housing, wherein a protrusion is formed on an outer peripheral edge of a top surface of the housing on a front surface side to prevent rainwater or the like from flowing to the LED display unit. An LED display device characterized by the above-mentioned. 2. The LED display device according to claim 1, wherein the protrusion is formed at a height higher than a snowfall amount at an installation position of the LED display device. 3. An LED display device having an LED display portion provided on a surface of a housing, wherein a top surface of the housing is formed on an inclined surface in which a height of a front outer peripheral edge is higher than a height of a rear outer peripheral edge. An LED display device for preventing outflow of rainwater or the like to a display unit. 4. An LED display device having an LED display unit provided on a surface of a housing, wherein a plurality of grooves are formed on the top surface of the housing from an outer peripheral edge on one side to an outer peripheral edge on the other side. An LED display device for preventing runoff of rainwater or the like. 5. An LED display device having an LED display unit provided on a surface of a housing, wherein the upper surface of the housing is extended forward from the LED display unit, and the LED display unit is connected to a lower edge of the upper surface of the housing. An LED display device, comprising: a hanging piece reaching a substantially extended line of an upper end edge to prevent rainwater or the like from flowing to an LED display unit. 6. The LED display device according to claim 1, wherein at least a top surface of the housing is formed of a material having good thermal conductivity. 7. The LED display device according to claim 5, wherein an air passage communicating between the inside and the outside of the housing is formed along a back surface on an upper surface side and a back surface on a top surface of the housing. . 8. A heater according to claim 1, wherein a heater is provided at least on a top surface of said housing.
The LED display device according to 3, 4, or 5.