JP2020098403A - Information display device - Google Patents

Abstract

To provide an information display device capable of improving visibility and maintainability.SOLUTION: An information display device includes a housing, a translucent plate, a light source board, and a support member. The housing has a front opening. The translucent plate is arranged inside the housing so as to block the opening. The light source board is arranged inside the housing and mounting multiple light emitting elements that display information by light emission through the translucent plate. The support member is arranged between the translucent plate and the light source board, so as to support the light source board, and has a plate surface part where multiple through-holes through which the multiple light emitting elements respectively penetrate by a pixel unit are formed.SELECTED DRAWING: Figure 4

Description

The present invention relates to an information display device that displays, for example, road information by light emission.

2. Description of the Related Art As an information display device for displaying road information and the like, there is known a display device which incorporates a light emitting diode (LED) and emits and displays traffic information such as signs such as maximum speed and lane regulation. For example, in Patent Document 1, a front plate having a light diffusive property and a light transmissive property is tilted obliquely downward with respect to a vertical plane, and a light emitting display plate for displaying information is displayed behind the front plate. There is disclosed an information display device arranged in parallel with and spaced from the front plate.

In the above information display device, LEDs for displaying characters/symbols by a dot matrix method are arranged on the light emitting display plate in a matrix of rows and columns at a predetermined pitch. In an installed state in which the optical axis is oriented in the horizontal direction in a state of being installed at a predetermined angle with respect to the surface, the legs are bent and attached to the light emitting display plate.

JP, 2006-155443, A

Generally, a wiring substrate is used as a mounting substrate for the LED. Wiring patterns, soldering traces of connector parts, etc. are exposed on the LED mounting surface of this type of wiring board. These wiring patterns and soldering traces are reflected by sunlight and vehicle illumination light, and emit light. This may reduce the appearance and visibility of the surface.

Further, when the wiring board on which the LED is mounted is packed or when the display device is assembled, the optical axis of the LED may change due to the wiring board coming into contact with an assembly jig or other parts. However, there was a case where it was necessary to readjust the optical axis later. Further, workability for replacing the wiring board of the display device installed on the road is poor, and improvement of maintainability is required.

In view of the above circumstances, an object of the present invention is to provide an information display device that can improve visibility and maintainability.

In order to achieve the above object, an information display device according to an aspect of the present invention includes a housing, a translucent plate, a light source substrate, and a support member.
The housing has an opening on the front surface.
The translucent plate is arranged inside the housing so as to close the opening.
The light source substrate is disposed inside the housing, and mounts a plurality of light emitting elements that transmit information through the light transmitting plate to display information.
The supporting member is disposed between the translucent plate and the light source substrate, supports the light source substrate, and has a plate surface portion in which a plurality of through holes through which the plurality of light emitting elements penetrate in a pixel unit are formed. Have.

In the above information display device, the support member is disposed between the light-transmitting plate and the light source substrate, and has a plate surface portion in which a plurality of through holes through which a plurality of light emitting elements penetrate is formed. It is possible to improve the visibility by preventing the solder traces of the wiring pattern and the connector parts from being exposed to the front side. Further, since the surface of the light source board is protected by the support member, it is possible to prevent the light source board from being damaged due to contact with an assembly jig or other parts at the time of assembling, etc. Since it can be easily attached and detached from the back surface of the, the maintainability is improved.

At least the surface of the plate surface portion facing the translucent plate may be black.

The surface roughness Ra of the surface of the translucent plate may be 2.0 μm or more and 3.5 μm or less.

The housing may include a first housing part, a second housing part, and a plurality of door parts.
The first housing portion has the opening.
The second housing portion is attached behind the first housing portion and supports the support substrate.
The plurality of door portions are provided on the back surface of the second housing portion and are configured so that the inside of the second housing portion can be opened.

The translucent plate may be sandwiched between the first casing part and the second casing part.

The upper edge portions of the plurality of door portions may be attached to the back surface of the second housing portion so as to be rotatable about an axis parallel to the width direction of the housing.

The information display device may further include a control unit that controls the light source substrate.
The control unit is arranged inside the housing at a position facing one door of the plurality of doors.

The control unit may be attached to be rotatable about an axis parallel to the height direction of the housing.

As described above, according to the information display device of the present invention, it is possible to improve visibility and maintainability.

It is a front view of the information display device concerning one embodiment of the present invention. It is a rear view of the said information display apparatus. It is a side view of the said information display apparatus. FIG. 3 is a schematic side sectional view of the information display device. It is a top view which shows one structural example of the light source module in the said information display apparatus. It is an expanded side sectional view of the principal part of the said light source module. It is a top view of an information display device in the opened state of a door. It is a side view which shows the installation example of the said information display apparatus. It is a side view of the information display device in the opened state of the door.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a front view of an information display device according to an embodiment of the present invention, FIG. 2 is a rear view thereof, FIG. 3 is a side view thereof, and FIG. 4 is an enlarged schematic side sectional view thereof.
In each figure, the X-axis, the Y-axis, and the Z-axis indicate the three axial directions orthogonal to each other, where the X-axis corresponds to the depth direction, the Y-axis corresponds to the width direction, and the Z-axis corresponds to the height direction.

The information display device 100 of the present embodiment is configured as a road information display device installed on, for example, a highway or a general road. The information display device 100 includes a housing 10, a translucent plate 20, a control unit 50, and a light emitting display unit 60 (see FIG. 4). The translucent plate 20, the control unit 50, and the light emitting display unit 60 are arranged inside the housing 10.

The housing 10 is formed in a rectangular parallelepiped shape having a front surface 10a, a back surface 10b, and a peripheral surface 10s. The light emitting display unit 60 includes a plurality of light emitting elements (LEDs) that transmit information through the light transmitting plate 20 to display information. The control unit 50 controls driving of the light emitting display unit 60.

The housing 10 is typically made of a metal material such as an aluminum alloy. The housing 10 has a first housing portion 11, a second housing portion 12, and a door 13, and is configured by combining these in the X-axis direction.

The first housing portion 11 forms the front surface 10a of the housing 10 and has a rectangular opening 110 in the surface. The second casing 12 is attached to the back of the first casing 11 and supports the translucent plate 20 that covers the opening 110, the light emitting display 60, and the control unit 50. The back surface of the second housing portion 12 forms the back surface 10b of the housing 10, and a maintenance window portion 120 and an insertion portion 14 for a cable (not shown) for supplying power to the control unit 50 and the light emitting display portion 60. Have.

The door 13 is installed on the back surface of the second housing 12 so as to cover the window 120. The door 13 is attached to the back surface of the second housing unit 12 via a hinge 131, and is configured to open the inside of the housing 10. The hinge 131 is installed at the upper edge of the door 13 and rotatably supports the door 13 around an axis parallel to the width direction (Y-axis direction) of the housing 10.

In the present embodiment, the door 13 includes two door portions 13L and 13R that are adjacent to each other in the left and right (Y-axis direction) (see FIG. 2). In this case, the window 120 is provided at two places corresponding to the mounting positions of the doors 13L and 13R. The door portions 13L and 13R can be opened and closed individually, and the opening/closing lock mechanism 132 and the opening/closing operation portion 133 are provided at appropriate positions. Although not shown, the door portions 13L and 13R have stoppers that maintain their open positions.

The one door portion 13L is mainly used when assembling or adjusting the control unit 50 and the light emitting display portion 60 to the housing 10. In addition to the above, the other door portion 13R is mainly used for maintenance and inspection of the control unit 50 and the light emitting display portion 60 after the information display device 100 is installed.

The translucent plate 20 is arranged inside the housing 10 so as to close the opening 110 of the housing 10. The transparent plate 20 has a rectangular shape corresponding to the shape of the opening 110. The translucent plate 20 is composed of a single transparent substrate having an outer surface 21 in contact with the outside air and an inner surface 22 facing the light emitting display section 60. The material forming the transparent plate 20 is not particularly limited, and typically, a transparent resin material such as polycarbonate or acrylic is used.

The translucent plate 20 is sandwiched between the inner surface of the first housing 11 at the peripheral edge of the opening 110 and the support frame 122 provided on the base 121 that constitutes the front surface of the second housing 12. It The support frame 122 is formed in a rectangular ring shape along the peripheral edge of the translucent plate 20. The support frame 122 has a seal portion 123 that protrudes toward the inside of the first housing portion 11 and contacts the peripheral edge portion of the inner surface 22 of the translucent plate 20. The seal portion 123 is for enhancing the sealing property between the translucent plate 20 and the support frame 122, and is typically composed of a seal member such as a rubber packing. The base portion 121 contacts the rear end portion of the first housing portion 11 and is integrally coupled to the first housing portion 11 via a fastener such as a bolt (not shown).

The outer surface 21 of the translucent plate 20 has a snow-adhesion structure in which snow is unlikely to adhere. More specifically, the outer surface 21 of the translucent plate 20 has a predetermined surface roughness. The surface roughness Ra (JIS B 0601:201) of the outer surface 21 is preferably 2.0 μm or more and 3.5 μm or less, more preferably 2.5 μm or more and 3.2 μm or less, and 2.9 μm or more 3. More preferably, it is not more than 1 μm. As a result, it is possible to prevent snow from adhering to the translucent plate 20 and to improve snow releasability.

The contact angle (JIS R 3257:1999) of the outer surface 21 of the transparent plate 20 is preferably 75° or more and 85° or less, more preferably 77° or more and 83° or less, and 79° or more 81. It is more preferable that the angle is not more than °. As a result, the outer surface 21 becomes excellent in water repellency, the adhesion of snow to the light transmitting plate 20 can be further suppressed, and the snow releasability can be made more excellent.

The light emitting display unit 60 is composed of a combined body of the light source substrate 30 and the support member 40. The light emitting display section 60 is arranged inside the housing 10 (second housing section 12) so as to face the translucent plate 20 (see FIG. 4 ). In the present embodiment, the light emitting display unit 60 is configured by arranging a plurality of combinations of the light source substrate 30 and the support member 40 in the XY plane.

As shown in FIG. 1, the light emitting display unit 60 includes a first display area 61 located at the center of the upper side of the display surface (front surface 10a), a second display area 62 located at the lower side thereof, and a first display area 62. And a pair of warning light portions 63 located on both the left and right sides of the display area 61.

The first display area 61 displays, for example, a place or a route such as a "tunnel" to be alerted. The second display area 62 displays warning information such as "running caution", "one-sided traffic", and "prohibition of entry". The warning light unit 63 functions as a blinking light that emits red or yellow, for example.

The light source substrate 30 includes a plurality of light emitting elements 31 that transmit information through the transparent plate 20 and display information, and a wiring board 32 on which the plurality of light emitting elements 31 are mounted. The light emitting element 31 is typically a light emitting diode (LED). The light emission color of the light emitting element 31 is not particularly limited, and is typically red, green, blue, or a mixed color of two or more of these. The emission color of the light emitting element 31 may be different from each other in the first display area 61, the second display area 62, and the warning light section 63.

A bullet-type LED is used as the light emitting element 31, but the light emitting element 31 is not limited to this, and a surface mount type LED may be used. The wiring board 32 is formed of a printed board, a plurality of light emitting elements 31 are mounted in a matrix on the front surface thereof, and electronic components such as a connector electrically connected to the control unit 50 are mounted on the back surface thereof.

A grip portion 33 for facilitating attachment and detachment of the light source substrate 30 to and from the support member 40 is attached to the back surface of the wiring board 32 opposite to the mounting surface of the light emitting element 31. The grip portion 33 also has a function as a binding portion for binding various wirings connected to the light source substrate 30 after the light source substrate 30 is installed.

The support member 40 is composed of a press-molded body of a metal plate, and is arranged between the translucent plate 20 and the light source substrate 30. The support member 40 has a plate surface portion 41 having a plurality of through holes 41 a through which each light emitting element 31 penetrates in a pixel unit, and a mounting portion 42 fixed to the base portion 121 of the second housing unit 12.

The plurality of through holes 41a formed in the plate surface portion 41 are rectangular, and the plurality of (four in this example) light emitting elements 31 exposed from the individual through holes 41a are the unit pixels (dots) 60p of the light emitting display unit 60. Make up. The number of pixels 60p is not particularly limited, and can be appropriately set according to the type and size of the character or figure to be displayed.

A single or a plurality of light source boards 30 are attached to the support member 40. Typically, the wiring board 32 of the light source board 30 is fixed to the back surface of the support member 40 from the back surface side of the housing 10 via a plurality of screw members. The first display area 61 of the light emitting display unit 60 is composed of two light source modules in which the two light source substrates 30 are arranged on one support member 40, and the second display area 62 is one support member 40. The four light source boards 30 are arranged in each of the four light source modules.

FIG. 5 is a plan view of the light source module 60M forming the second display area 62. As shown in FIG. 5, the pixels 60p of the light emitting display section 60 are arranged at equal pitches in the Y-axis direction, the Z-axis direction, or each of the Y-axis and Z-axis directions. In the present embodiment, as will be described later, the housing 10 is installed on the road by inclining forward by a predetermined angle with respect to the vertical direction. In this case, the pitches of the pixels 60p in the Z-axis direction are arranged at a pitch larger than that of the pixels 60p in the Y-axis direction so that the pitches of the pixels 60p in the Y-axis direction and the Z-axis direction are equal when viewed from the front. Good.

The light source substrate 30 is arranged on the back surface side of the support member 40 so as to face the plate surface portion 41. FIG. 6 is an enlarged side cross-sectional view of a main part showing the relationship between the light source substrate 30 and the support member 40. As shown in FIG. 6, each light emitting element 31 of the light source substrate 30 penetrates each through hole 41 a provided in the plate surface portion 41 of the support member 40 and projects in the front direction. Therefore, when viewed from the transparent plate 20 side, the wiring substrate 32 of the light source substrate 30 is covered with the support member 40, and only the light emitting element 31 is exposed to the transparent plate 20 side. Therefore, the wiring pattern and the soldering traces on the wiring board 32 are not reflected by the sunlight radiated from the front or the illumination light of the vehicle and reflected, and the appearance and visibility of the display surface of the light emitting display unit 60 are not deteriorated.

Further, since the light source module 60M is configured such that the light source substrate 30 is arranged on the back surface of the support member 40, the mounting surface of the light source substrate 30 can be protected by the support member 40. As a result, when the light emitting display unit 60 is incorporated into the housing 10, the light source substrate 30 comes into contact with an assembling jig or other parts, which damages the light emitting element 31 or changes its optical axis. It is possible to prevent the occurrence of defects.

Further, since the light source substrate 30 is arranged on the back surface of the support member 40, even if the light source substrate 30 needs to be replaced after the information display device 100 is installed, the support member 40 is not removed from the housing 10. It is possible to attach and detach only the light source substrate 30 from the window portion 120 on the back side. Thereby, the maintainability of the information display device 100 can be improved.

The support member 40 is fixed to the base 121 of the second housing unit 12 via a fastener such as a bolt that is inserted into the hole 42a (see FIG. 5) of the mounting portion 42. The mounting portions 42 are provided on the peripheral edge portion of the plate surface portion 41, and in the present embodiment, are respectively provided on the edge portions facing in the Z-axis direction. As shown in FIG. 4, the shape of the mounting portion 42 is formed on the plate surface portion 41 via a step, but the shape is not limited to this and may be formed in the same plane as the plate surface portion 41.

The support member 40 is made of a metal material such as an aluminum alloy or stainless steel. The color of the support member 40 is not particularly limited, but at least the surface of the plate surface portion 41 facing the translucent plate 20 is preferably black. As a result, reflection of external light on the plate surface portion 41 can be suppressed, so that the visibility of the light emitting display portion 60 can be improved.

The control unit 50 is connected to a commercial power source via a cable (not shown) inserted through the insertion portion 14 of the housing 10. The control unit 50 is electrically connected to the light source substrate 30 of the light emitting display unit 60, and drives (emits) the light emitting element 31 in the first display area 61, the second display area 62, and the warning light section 63. Control.

The control unit 50 is arranged inside the housing 10 at a position facing one door portion 13R (see FIG. 2). Therefore, after the information display device 100 is installed, the control unit 50 can be accessed by opening only one door portion 13R of the two doors 13.

Further, in the present embodiment, the control unit 50 is attached so as to be rotatable about an axis parallel to the height direction (Z axis direction) of the housing 10. FIG. 7 is a plan view of the information display device 100 with the door 13R open. As shown in FIG. 7, the control unit 50 has a rotary shaft 51 mounted inside the housing 10 and parallel to the Z-axis direction, and has a normal position indicated by a broken line and a pull-out position indicated by a chain double-dashed line in the figure. It is configured to be rotatable between and. The rotation angle range of the control unit 50 is not particularly limited and is, for example, 80° to 100°.

The information display device 100 of the present embodiment further includes a notification device 70. The alarm 70 is installed on the peripheral surface 10s of the housing 10 and above the right side surface in FIG. The alarm 70 is a speaker that issues a warning such as a buzzer or an announcement from a traffic control center or the like to a running vehicle, and is arranged such that the emitting direction of the alarm sound is inclined upward by a predetermined angle toward the front. This is based on the assumption that the information display device 100 is installed on the road by inclining forward by a predetermined angle with respect to the vertical direction, as described above.

FIG. 8 is a side view showing an installation example of the information display device 100 on the road. The information display device 100 is installed at a predetermined height position on the road via the arm portions P1 and P2 of the support P and the fixed frame P3. The inclination angle θ of the front surface 10a of the information display device 100 with respect to the vertical direction (Z-axis direction) is not particularly limited and is, for example, 30 degrees to 35 degrees.

By installing the information display device 100 in a forward tilted position as shown in the figure, it is possible to increase the visibility of information from a vehicle traveling on the installation route of the information display device 100. Further, it is difficult for snow to occur on the front surface 10a of the housing 10 and the outer surface 21 of the translucent plate 20 during snowfall. In particular, in the present embodiment, since the outer surface 21 of the transparent plate 20 has the surface roughness (Ra) in the above-described range, it is possible to further suppress the adhesion of snow to the transparent plate 20 and to remove the snow. Can be made even better.

Further, as shown in FIG. 8, a cover 80 may be installed on the top of the information display device 100. The cover 80 has an inclined surface that is inclined downward to prevent snow from accumulating on the upper surface of the housing 10. As a result, even in a mountainous area with a lot of snow, a heavy snowfall area, or the like, it is possible to prevent a decrease in visibility due to snow accretion without the need for a fusing device such as a heater.

On the other hand, in the information display device 100 of the present embodiment, the door 13 that opens the inside of the housing 10 is divided into a plurality of door portions 13L and 13R, and therefore, during maintenance work after the information display device 100 is installed. The desired work can be carried out simply by opening one of the doors. As a result, the labor required for opening and closing a large-area door can be reduced, and workability can be improved.

In this embodiment, since the control unit 50 is installed at a position facing the right door portion 13R, the control unit 50 can be accessed simply by opening the door portion 13R. Moreover, since the control unit 50 is configured to be rotatable about the rotation shaft 51 as shown in FIG. 7, the light source module M (the light source board 30) can be pulled out by pulling the control unit 50 outward as necessary. ) Will be easy to access.

Further, in the present embodiment, the door portions 13L and 13R are configured so as to open upward by flipping up via the hinge 131. FIG. 9 is a side view of the information display device 100 showing the opened state of the door portion 13R. As shown in the figure, according to the present embodiment, the opened door portion 13R can function as a roof that protects the worker from rainfall and snowfall.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made.

For example, in the above embodiments, the information display device installed on the road has been described as an example, but the present invention is not limited to this, and is applicable to an information display device that displays information other than road information.

Further, in the above-described embodiment, the housing 10 is formed in a horizontally long rectangular parallelepiped shape, but the present invention is not limited to this, and a circular or vertically long rectangular parallelepiped housing may be used. The form of the light emitting display unit 60 is not limited to the above example, and for example, the warning light unit 63 may be omitted, or only the first display area 61 or the second display area 62 may be configured.

Reference numeral 10... Housing 10a... Front surface 13L, 13R... Door portion 20... Translucent plate 30... Light source substrate 31... Light emitting element 32... Wiring substrate 40... Support member 41... Plate surface portion 41a... Through hole 50... Control unit 60... Luminescent display Part 60M... Light source module 100... Information display device 110... Opening part

Claims (8)

A housing having an opening on the front,
A transparent plate disposed inside the housing so as to close the opening,
A light source substrate which is disposed inside the housing, and which mounts a plurality of light emitting elements that transmit information through the light transmitting plate to display information.
A support member that is disposed between the light-transmitting plate and the light source substrate, supports the light source substrate, and has a plate surface portion having a plurality of through holes through which the plurality of light emitting elements pass through in pixel units. An information display device provided. The information display device according to claim 1, wherein
In the information display device, at least the surface of the plate surface portion facing the transparent plate is black. The information display device according to claim 1 or 2, wherein
The surface roughness Ra of the surface of the transparent plate is 2.0 μm or more and 3.5 μm or less. The information display device according to any one of claims 1 to 3,
The casing includes a first casing having the opening,
A second housing part mounted behind the first housing part and supporting the support substrate;
An information display device, comprising: a plurality of doors provided on the back surface of the second housing portion and capable of opening the inside of the second housing portion. The information display device according to claim 4,
The information display device, wherein the translucent plate is sandwiched between the first casing part and the second casing part. The information display device according to claim 4 or 5, wherein
An information display device, wherein the upper edge portions of the plurality of door portions are attached to the back surface of the second housing portion so as to be rotatable about an axis parallel to the width direction of the housing. The information display device according to any one of claims 4 to 6,
Further comprising a control unit for controlling the light source substrate,
The information display device, wherein the control unit is arranged inside the housing at a position facing one of the plurality of doors. The information display device according to claim 7, wherein
The information display device, wherein the control unit is attached so as to be rotatable about an axis parallel to the height direction of the housing.

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