JP6847909B2 - Information display device - Google Patents

Description

The present invention relates to, for example, an information display device that emits and displays road information and the like.

As an information display device for displaying road information and the like, a display device having a built-in light emitting diode (LED) and displaying traffic information such as a sign such as a maximum speed and lane regulation is known. For example, in Patent Document 1, a front plate having light diffusivity and light transmission is tilted diagonally downward with respect to a vertical plane, and behind the front plate, a light emitting display plate that emits and displays information is provided. An information display device arranged in parallel with and at a distance from the front plate is disclosed.

In the above information display device, LEDs for displaying characters, symbols, etc. by light emission in a dot matrix method are arranged on the light emitting display board in a vertical and horizontal matrix at a predetermined pitch, and each LED vertically displays the light emitting display board. It is attached to the light emitting display board by bending its legs (leads) so that the optical axis faces the horizontal direction in an installed state in which the surface is tilted by a predetermined angle.

Japanese Unexamined Patent Publication No. 2006-155443

Generally, a wiring board is used as the LED mounting board. Wiring patterns, soldering marks of connector parts, etc. are exposed on the LED mounting surface of this type of wiring board, and these wiring patterns and soldering marks are reflected by sunlight and vehicle illumination light and are displayed as light emission. It may reduce the appearance and visibility of the surface.

Further, when packing the wiring board on which the LED is mounted or when assembling the display device, the optical axis of the LED changes due to the wiring board coming into contact with a jig for assembly or other parts. 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 in maintainability is required.

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

In order to achieve the above object, the information display device according to one embodiment of the present invention includes a housing, a light transmitting 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 arranged inside the housing, and mounts a plurality of light emitting elements that transmit information through the light transmitting plate and display information.
The support member is arranged between the light-transmitting plate and the light source substrate, supports the light source substrate, and has a plate surface portion formed with a plurality of through holes through which the plurality of light emitting elements penetrate in pixel units. Have.

In the above information display device, since the support member is arranged 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 are formed, the surface of the light source substrate is formed. It is possible to improve visibility by preventing exposure of soldering marks such as wiring patterns and connector parts to the front side. In addition, since the surface of the light source board is protected by the support member, it is possible to prevent damage to the light source board due to contact with the assembly jig and other parts during assembly, and the light source board is housed after installation. Since it can be easily attached and detached from the back of 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 light-transmitting plate may be 2.0 μm or more and 3.5 μm or less.

The housing may have a first housing portion, a second housing portion, and a plurality of door portions.
The first housing portion has the opening.
The second housing portion is attached behind the first housing portion to support the support substrate.
The plurality of doors are provided on the back surface of the second housing, and the inside of the second housing can be opened.

The light transmitting plate may be sandwiched between the first housing portion and the second housing portion.

The upper edge portions of the plurality of door portions may be rotatably attached to the back surface of the second housing portion around 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 of the plurality of doors.

The control unit may be rotatably mounted around an axis parallel to the height direction of the housing.

As described above, according to the information display device of the present invention, visibility and maintainability can be improved.

It is a front view of the information display device which concerns on one Embodiment of this invention. It is a rear view of the said information display device. It is a side view of the said information display device. It is a schematic side sectional view of the said information display device. It is a top view which shows one configuration example of the light source module in the said information display device. It is an enlarged side sectional view of the main part of the said light source module. It is a top view of the information display device in the open state of a door part. It is a side view which shows the installation example of the said information display device. It is a side view of the information display device in the open state of a door part.

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

FIG. 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 show three axial directions orthogonal to each other, 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 light transmitting plate 20, a control unit 50, and a light emitting display unit 60 (see FIG. 4). The light transmitting 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 has a plurality of light emitting elements (LEDs) that transmit information through the light transmitting plate 20 and display information. The control unit 50 controls the drive 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 plane. The second housing portion 12 is attached behind the first housing portion 11 and supports the light transmitting plate 20, the light emitting display unit 60, and the control unit 50 that cover the opening 110. The back surface of the second housing portion 12 forms the back surface 10b of the housing 10, and the insertion portion 14 of the cable (not shown) for supplying power to the window portion 120 for maintenance and the control unit 50 and the light emitting display unit 60. Has.

The door 13 is installed on the back surface of the second housing portion 12 so as to cover the window portion 120. The door 13 is attached to the back surface of the second housing portion 12 via a hinge 131 so that the inside of the housing 10 can be opened. The hinge 131 is installed on 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 adjacent to each other on the left and right (Y-axis direction) (see FIG. 2). In this case, the window portions 120 are provided at two locations corresponding to the mounting positions of the door portions 13L and 13R. The door portions 13L and 13R can be opened and closed individually, and an opening / closing lock mechanism 132 and an opening / closing operation portion 133 are provided at appropriate positions. The door portions 13L and 13R have stoppers that maintain their open positions, even if they are not shown.

One door portion 13L is mainly used when assembling or adjusting the control unit 50 and the light emitting display unit 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 unit 60 after the information display device 100 is installed.

The light transmitting plate 20 is arranged inside the housing 10 so as to close the opening 110 of the housing 10. The light transmitting plate 20 has a rectangular shape corresponding to the shape of the opening 110. The light transmitting 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 unit 60. The material constituting the light transmitting plate 20 is not particularly limited, and a transparent resin material such as polycarbonate or acrylic is typically used.

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

The outer surface 21 of the light-transmitting plate 20 has a snow accretion-resistant structure in which snow does not easily 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 It is more preferably 0.1 μm or less. As a result, it is possible to suppress the adhesion of snow to the light transmitting plate 20, and it is possible to improve the peelability of snow.

The contact angle (JIS R 3257: 1999) of the outer surface 21 of the translucent plate 20 is preferably 75 ° or more and 85 ° or less, more preferably 77 ° or more and 83 ° or less, and 79 ° or more and 81 ° or more. It is more preferably ° or less. As a result, the outer surface 21 has excellent water repellency, the adhesion of snow to the light transmitting plate 20 can be further suppressed, and the peelability of snow can be further improved.

The light emitting display unit 60 is composed of a combination of the light source substrate 30 and the support member 40. The light emitting display unit 60 is arranged inside the housing 10 (second housing unit 12) so as to face the light transmitting plate 20 (see FIG. 4). In the present embodiment, a plurality of couplings of the light source substrate 30 and the support member 40 are arranged in the XY plane to form the light emitting display unit 60.

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

The first display area 61 displays a place or route to be called attention, such as a “tunnel”. The second display area 62 displays warning information such as "running caution", "one-sided traffic", and "no entry". The warning light unit 63 functions as, for example, a flashing light that emits light in red or yellow.

The light source substrate 30 includes a plurality of light emitting elements 31 that transmit information through the light transmitting plate 20 to emit 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 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 unit 63.

A bullet-shaped LED is used for 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 composed of a printed circuit board, and 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 / detachment of the light source substrate 30 to / from the support member 40 is attached to the back surface of the wiring board 32 on the side opposite to the mounting surface of the light emitting element 31. The grip portion 33 also has a function as a binding portion for bundling various wirings connected to the light source substrate 30 after the light source substrate 30 is installed.

The support member 40 is made of a press-molded metal plate, and is arranged between the light-transmitting plate 20 and the light source substrate 30. The support member 40 has a plate surface portion 41 having a plurality of through holes 41a through which each light emitting element 31 penetrates in pixel units, and a mounting portion 42 fixed to the base portion 121 of the second housing portion 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 unit pixels (dots) 60p of the light emitting display unit 60. To configure. The number of pixels 60p is not particularly limited, and can be appropriately set according to the type and size of characters and figures to be displayed.

A single or a plurality of light source substrates 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 two light source substrates 30 are arranged on one support member 40, and the second display area 62 is composed of one support member 40. It is composed of four light source modules in which four light source substrates 30 are arranged in each.

FIG. 5 is a plan view of the light source module 60M constituting the second display area 62. As shown in FIG. 5, each pixel 60p of the light emitting display unit 60 is arranged at equal pitches in the Y-axis direction, the Z-axis direction, or in the Y-axis and Z-axis directions, respectively. In the present embodiment, as will be described later, the housing 10 is installed on the road so as to be inclined forward by a predetermined angle with respect to the vertical direction. In this case, the pitch of the pixels 60p in the Z-axis direction is arranged at a pitch larger than the pitch 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. May be 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 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 41a provided in the plate surface portion 41 of the support member 40 and projects in the front direction. Therefore, when viewed from the light transmitting plate 20 side, the wiring board 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 light transmitting plate 20 side. Therefore, the wiring pattern and the soldering marks on the wiring board 32 receive and reflect the sunlight radiated from the front and the illumination light of the vehicle, 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 in such a form 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 a jig for assembly or other parts, and the light emitting element 31 is damaged or its optical axis changes. It is possible to prevent the occurrence of problems.

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. Only the light source substrate 30 can be attached / detached from the window portion 120 on the back side. As a result, the maintainability of the information display device 100 can be improved.

The support member 40 is fixed to the base portion 121 of the second housing portion 12 via fasteners such as bolts that are inserted into the hole portion 42a (see FIG. 5) of the mounting portion 42. The mounting portion 42 is provided on the peripheral edge portion of the plate surface portion 41, and in the present embodiment, the mounting portion 42 is provided on the edge portion facing the Z-axis direction. The shape of the mounting portion 42 is formed with respect to the plate surface portion 41 via the step portion as shown in FIG. 4, but is not limited to this, and may be formed on 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, the 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 (lights) the light emitting element 31 in the first display area 61, the second display area 62, and the warning light unit 63. Control.

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

Further, in the present embodiment, the control unit 50 is rotatably attached around 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 in the open state of the door portion 13R. As shown in FIG. 7, the control unit 50 has a rotation shaft 51 mounted inside the housing 10 parallel to the Z-axis direction, and has a normal position shown by a broken line in the figure and a drawer position shown by a two-dot chain line. 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 a peripheral surface 10s of the housing 10, and is installed at a position above the right side surface portion in FIG. The alarm 70 is a speaker that issues an alarm such as a buzzer or an announcement to a moving vehicle from a traffic control center or the like, and is arranged so that the emission direction of the alarm sound is inclined upward by a predetermined angle. As described above, it is assumed that the information display device 100 is installed on the road at an angle forward by a predetermined angle with respect to the vertical direction.

FIG. 8 is a side view showing an example of installation 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 column 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 leaning posture as shown in the figure, it is possible to improve the visibility of information from a vehicle traveling on the route on which the information display device 100 is installed. Further, when it snows, it becomes difficult for snow to land on the front surface 10a of the housing 10 and the outer surface 21 of the translucent plate 20. In particular, in the present embodiment, since the outer surface 21 of the translucent plate 20 has the surface roughness (Ra) in the above-mentioned range, it is possible to further suppress the adhesion of snow to the translucent plate 20 and the snow peelability. Can be made 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 forward in order to prevent snow from accumulating on the upper surface of the housing 10. As a result, it is possible to prevent a decrease in visibility due to snow accretion without the need for a fusion device such as a heater even in a mountainous area with a lot of snow or a heavy snowfall area.

On the other hand, in the information display device 100 of the present embodiment, since the door 13 that opens the inside of the housing 10 is divided into a plurality of door portions 13L and 13R, during maintenance work after the information display device 100 is installed, the door 13 is divided into a plurality of door portions 13L and 13R. , 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 the present embodiment, since the control unit 50 is installed at a position facing the right door portion 13R, the control unit 50 can be accessed only by opening the door portion 13R. Moreover, since the control unit 50 is configured to be rotatable around the rotation shaft 51 as shown in FIG. 7, the light source module M (light source substrate 30) can be pulled out as needed by pulling out the control unit 50. ) Is also easy to access.

Further, in the present embodiment, the door portions 13L and 13R are configured to be opened so as to be flipped upward via the hinge 131. FIG. 9 is a side view of the information display device 100 showing the open state of the door portion 13R. As shown in the figure, according to the present embodiment, the open door portion 13R can function as a roof that protects the operator 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 embodiment, the information display device installed on the road has been described as an example, but the present invention is not limited to this, and the present invention can be applied to an information display device that displays information other than road information.

Further, in the above embodiment, the housing 10 is formed in a horizontally long rectangular parallelepiped shape, but the present invention is not limited to this, and a housing having another shape such as a circular or vertically long rectangular parallelepiped may be adopted. 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 may be composed of only the first display area 61 or the second display area 62.

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

Claims (6)

A housing with an opening on the front and
A light-transmitting plate arranged inside the housing so as to close the opening,
A light source substrate arranged inside the housing and equipped with a plurality of light emitting elements that transmit information through the light transmitting plate and display information.
A support member arranged between the light transmitting plate and the light source substrate, supporting the light source substrate, and having a plate surface portion formed with a plurality of through holes through which the plurality of light emitting elements penetrate in pixel units. Equipped with
The housing is
The first housing portion having the opening and
A second housing portion that is attached behind the first housing portion and supports the support member, and a second housing portion.
It has a plurality of door portions provided on the back surface of the second housing portion and capable of opening the inside of the second housing portion.
An information display device in which the upper edge portions of the plurality of door portions are rotatably attached to the back surface of the second housing portion around an axis parallel to the width direction of the housing. The information display device according to claim 1.
The plate surface portion is an information display device whose surface facing at least the translucent plate is black. The information display device according to claim 1 or 2.
An information display device having a surface roughness Ra of the surface of the light-transmitting plate of 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 light-transmitting plate is an information display device sandwiched between the first housing portion and the second housing portion. The information display device according to any one of claims 1 to 4.
A control unit for controlling the light source substrate is further provided.
The control unit is an information display device inside the housing and arranged at a position facing one of the plurality of doors. The information display device according to claim 5.
The control unit is an information display device that is rotatably attached around an axis parallel to the height direction of the housing.

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