JP4627401B2 - Display device - Google Patents

Description

  The present invention relates to a display device, and more particularly to an internally illuminated display device capable of performing a night lighting display using a solar cell.

Conventionally, a display device for performing various displays in an outdoor public space is known. As this display device, characters and designs are displayed on the surface of a display plate made of a plate-like member standing on the ground via a support, and the installation position of the display device is an evacuation place in a specific district Or a surrounding building, equipment, or evacuation direction is displayed with a symbol such as an arrow.
However, such a display device has a disadvantage that it cannot achieve a display effect at night unless a lighting fixture such as a fluorescent lamp is used in combination. In addition, the display contents may be faded over time, and inevitable work such as the necessity of periodically replacing the fluorescent lamp is required.

  By the way, recently, from the viewpoint of saving power consumption and maintenance, a display unit is provided on the front side of the case with a built-in light-emitting diode, and the display unit can be seen at night by turning on the light-emitting diode. A type of road sign or the like has been proposed (see Patent Document 1).

JP 2000-67378 A

  However, in the display device disclosed in Patent Document 1, the display device is fixed to the support column, and the solar cell unit is attached to the upper end of the support column, which is configured as a single unit. Not. Therefore, for example, when this type of display device is attached to the outer wall of a building or a display board installed in the public space described above, the display device and the solar cell unit must be attached separately, This causes inconvenience that the work becomes complicated. Moreover, since the outer wall of the building and the existing display board are usually not designed to mount the solar cell unit, there are restrictions on the mounting operation and there is no versatility.

[Object of invention]
The present invention has been devised paying attention to such inconveniences, and an object thereof is to provide a display device that can be used as a unit in which a charging function and a lighting function are integrated. .
Another object of the present invention is to provide a display device having versatility that can be easily attached to an existing display panel outdoors.
Another object of the present invention is to provide a display device that can efficiently secure the light energy applied to the solar cell unit and improve the charging efficiency even if the overall size is made compact. There is to do.

In order to achieve the above object, the present invention stores light energy given to a solar cell module in a battery as electrical energy, and causes a light emitting diode arranged in a predetermined case to emit light at a preset timing. In the display device provided so that the display unit of the case can be illuminated,
Together provided et the so as to be positioned on the case wherein the display unit is in a vertical plane, the upper and left and right sides of the display unit around an inclined surface extending in the casing outer peripheral direction while gradually reducing the thickness of the display device,
In the state where the daylighting surface of the solar cell module is provided on the inclined surface and the daylighting surface is visible, the solar cell module is disposed on the upper and left and right sides of the case, and the battery is disposed in the case. The structure is adopted.

The half-value angle of the light emitting diode is preferably 120 degrees or more.

According to the present invention, since the display device is configured as a single unit, it can be easily attached to the outer wall of a building or an outdoor display board. It is possible to realize so-called maintenance-free after installation.
Moreover, since the solar cell module is arranged outside the display unit, for example, on the upper part of the case and on both the left and right sides, the lighting surface becomes multi-directional, so that solar energy can be obtained efficiently and charging efficiency can be increased. .
Furthermore, it is possible to obtain a legible display effect as the number of light emitting diodes less to improve the uniformity in Table radical 113.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the present specification, unless otherwise specified, the term indicating the position will be described based on the case where the display device is viewed from the front as shown in FIG. The “front side” is used on the front side in the figure.

  FIG. 1 is a schematic perspective view of an embodiment in which a display device according to the present invention is mounted on an outdoor display board. FIGS. 2 and 3 are a perspective view and a partially broken front view of the display device. It is shown. In these drawings, the display device 10 is attached in the plane of a display board P standing on the ground such as a park. The display device 10 includes a case 11, a solar cell module 12, a battery 13, and a light emitting diode 15 arranged in the case 11. The display device 10 has a small and thin size in the shape of a substantially flat box having a length and width of about 30 centimeters and a front and rear thickness of about 55 millimeters. It is a matter that can be changed according to the above.

  The case 11 is made of a synthetic resin material so as not to suffer from rust. The case 11 includes a case main body 16 and a cover 17 located on the front side of the case main body 16. As shown in FIGS. 4 to 6, the case main body 16 is provided with a concave portion having a substantially wavy cross-sectional shape and a substantially square shape in plan view, and four pieces surrounding the outside of the case bottom surface 20. The inner peripheral wall 21, the outer bottom surface 22 connected to the lower end (right end in FIG. 4) of the inner peripheral wall 21 and directed to the outside substantially orthogonal to the inner peripheral wall 21, and a slight amount from the outer peripheral portion of the outer bottom surface 22. It is comprised by the outer periphery standing part 23 which stands up at height, and the whole becomes a substantially square shape by planar view, and is provided in the shape which the front side opens. The concave portions 20A of the case bottom surface 20 form a substantially dish-shaped curved surface, and are continuously formed in three rows in a state substantially parallel to each other along the left-right direction (the direction orthogonal to the paper surface in FIG. 4). Each recessed portion 20A functions as a light reflecting surface when the light emitting diode 15 disposed in the lower portion thereof is turned on, and has a rigidity characteristic that can improve the strength of the surface compared to a flat surface. Functions as a site. In the present embodiment, the case where the recesses 20A are arranged in three rows is shown, but it can be increased or decreased as necessary, and the curved surface has various shapes as long as it can function as a reflective surface. can do. Further, the inner peripheral wall 21 surrounding the case bottom surface 20 has a lower end (right end in FIG. 4) that substantially coincides with the outer surface of the lower portion of the recess 20A, while an upper end (left end in FIG. 4) is the uppermost portion of the recess 20A. The distance between the light emitting diode 15 and a display unit to be described later is secured.

  The cover 17 is positioned relative to the case bottom surface 20 and includes a first cover 27 having a display portion 26 having a planar shape substantially corresponding to the planar shape of the case bottom surface 20 in a central region, And a second cover 28 combined on the outer surface side of the first cover 27 without concealing the display unit 26. Here, the display unit 26 includes a front plate 30 and an inner surface plate 31, and the inner surface plate 31 is composed of a dairy plate or the like, and colored characters indicating the display contents on the front side thereof, Symbols, figures, etc. are given by printing or film sticking. Except for the inner surface plate 31, the first cover 27 is formed by using a transparent resin material such as an acrylic resin as a molding material. In the first cover 27, the upper part and the left and right sides around the display part 26 are inclined surfaces 33 extending toward the outer peripheral standing part 23 (see FIG. 4) of the case body 11 as shown in FIGS. 7 and 8. In addition, an outer peripheral horizontal wall 34 that is connected to the outer periphery of the inclined surface 33 and that is fitted to the outer peripheral standing portion 23 is integrally formed, while a lower wall 35 that is connected to a lower portion of the display unit 26 is a substantially arc-shaped corner. It is formed so as to be fitted to the outer peripheral standing part 23 via the part 35 </ b> A, so that a sufficient storage space for the battery 13 is secured in the lower wall 35.

  The second cover 28 is made of an opaque colored resin material. The second cover 28 includes a substantially rectangular notch window 40 that receives the display unit 26 in substantially the same plane, and an upper cover that is positioned along the outer surface side of the inclined surface 33 and the lower wall 35. A peripheral wall 42, left and right cover peripheral walls 43, and a lower cover peripheral wall 44 are provided. In the planes of the upper cover peripheral wall 42 and the left and right cover peripheral walls 43, elongated window holes 45 are respectively formed along their one-length directions, and the transparent inclined surfaces 33 are formed in the window holes 45. The surface is formed so as to be exposed in an elongated region, and thus, a light-transmitting window W that is closed is formed on the upper portion of the cover 17 and on both the left and right sides.

  The solar cell module 12 has a length and a width substantially corresponding to the translucent window W. The solar cell module 12 includes an upper solar cell module 12A and left and right solar cell modules 12B and 12C. Each of the solar cell modules 12A to 12C includes a holder 53 made of a bent plate member or the like that is fixed to a convex portion 50 integrally provided on the inner surface side of each inclined surface 33 of the first cover 27 via a bolt 51. The lighting surface is attached through a transparent window W so as to be visible. The holder 53 may be configured by a leaf spring member in which one part located on the back surface (inner surface) side of the solar cell module 12 presses and holds the solar cell module 12 against the inclined surface 33. As shown by the dotted lines in FIG. 3, the holders 53 are respectively arranged in the vicinity of both sides in the longitudinal direction of the solar cell module 12, and thereby configured to keep the position of the solar cell module 12 stably.

  Three batteries 13 are provided, and are connected to the solar cell module 12 via wires (not shown). These batteries 13 are accommodated in the lower cover peripheral wall 44 of the case 11. As shown in FIGS. 3 and 4, the battery 13 in the present embodiment has a substantially cylindrical outer shape, and a lower half portion substantially corresponding to a region of approximately 180 degrees on the outer peripheral side is accommodated on the curved receiving portion 55. Has been. However, since the battery 13 lies at the lowest position when the display device 10 is in use, the battery 13 can be kept in a stable position by its own weight simply by being housed in the lower cover peripheral wall 44. Examples of the battery 13 include a lead battery, a nickel cadmium battery, and an electric double layer capacitor. As shown in FIG. 3, a control circuit board 60 is connected in the vicinity of the battery 13, and charging control, lighting control, and the like can be performed by the control circuit board 60. Incidentally, the control circuit board 60 turns on the light emitting diode 15 when the electromotive voltage of the solar cell module 12 becomes equal to or less than a preset value, or incorporates an illuminance meter or timer, and responds to these outputs. A control method such as lighting is adopted.

  The light emitting diodes 15 are connected to the battery 13 and the like through wirings not shown, and are equally spaced from each other on the substrate 61 positioned at the lower portion of the recess 20A along the extending direction of each recess 20A. It is arranged at three places that are separated from each other. In the present embodiment, a total of nine light emitting diodes 15 are used in each row of the recesses 20A, but the number can be increased or decreased as necessary. The light-emitting diode 15 is preferably a light-emitting diode with a wide light distribution and a light-emitting diode with a half-value angle of 120 degrees or more in order to increase the uniformity in the display portion.

  In addition, the code | symbol 70 in FIG. 6 is a screw, The said screw 70 can be inserted from the bottom corner vicinity of the case main body 16, and can be screwed and fixed to the cover 17 side which is not shown in figure. Although not shown here, a screw hole is formed in the bottom surface of the cover 17, and the display device 10 can be attached to the display plate P shown in FIG. 1 using the screw hole. .

  Next, the operation of the display device 10 will be described.

By performing daylighting from the solar cell module 12, the battery 13 is charged. At this time, charging is continued while the electromotive force of the solar cell module 12 is greater than a preset threshold value. When the electromotive force decreases due to sunset and falls below the threshold value, the control circuit board 60 controls the light-emitting diode 15 to be turned on, assuming that it is nighttime. This lighting continues until dawn when the electromotive force exceeds the threshold value. As the capacity of the power storage device, even if there are consecutive rainy and cloudy days where sufficient power storage is not possible, a capacity that can cope with nighttime illumination when the sunshine time is the shortest is adopted.
When the light emitting diode 15 is turned on, the light is directly transmitted through the display unit 26 and is reflected to the display unit 26 side through the recess 20A on the bottom surface 20 of the case, and characters, figures, and the like applied to the inner surface plate 31 are displayed. The content can be illuminated and displayed through the front plate 30 in a transparent manner.

The best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this.
That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but the embodiments described above are within the scope of the technical idea and scope of the invention. On the other hand, those skilled in the art can make various modifications in shape, material, quantity, and other detailed configurations.
Therefore, the description limited to the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

For example, in the above-described embodiment, the display device 10 is illustrated and described with a substantially rectangular outer shape in plan view, but the present invention is not limited to this. That is, the object having a polygonal shape other than a square or a rectangle, or a circle or an ellipse can be targeted. Further, the solar cell module 12 has been placed in three positions, it does not interfere with placing the solar cell module even under outer peripheral wall.
Furthermore, in the above-described embodiment, the recess 20A has a substantially semi-cylindrical shape in cross-sectional shape, but may have a substantially hemispherical shape. That is, it is only necessary that the light from the light emitting diode 15 can be efficiently increased and the uniformity can be increased. It may be on a plane as long as the uniformity is obtained. Moreover, you may use a well-known light-guide plate as a light source.

  In particular, the present invention can be used outdoors as a sign indicating the direction of a specific evacuation site or facility.

The schematic perspective view which shows one Embodiment with which the display apparatus was applied to the outdoor display board. The schematic perspective view of the said display apparatus. The partially broken front view of the said display apparatus. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 4 is a cross-sectional view taken along line B-B in FIG. 3. The rear view of the said display apparatus. The right view of the said display apparatus. The top view of the said display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Display apparatus 11 Case 12 Solar cell module 13 Battery 15 Light emitting diode 16 Case main body 17 Cover 20 Case bottom face 20A Recessed part 26 Display part P Display board W Translucent window

Claims (2)

The light energy given to the solar cell module is stored in the battery as electric energy, and the display part of the case is provided so as to be illuminable by causing the light emitting diodes arranged in a predetermined case to emit light at a preset timing. In the display device,
Together provided et the so as to be positioned on the case wherein the display unit is in a vertical plane, the upper and left and right sides of the display unit around an inclined surface extending in the casing outer peripheral direction while gradually reducing the thickness of the display device,
The solar cell module is disposed on the upper and left and right sides of the case in a state where the daylighting surface of the solar cell module is provided on the inclined surface and the daylighting surface is visible, and the battery is disposed in the case. A display device. Claim 1 Symbol placement of the display device, wherein the half angle is more than 120 degrees of the light emitting diode.

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