JPH11149263A - Lighting display unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure sufficient luminance even in outdoor use in the daytime, and to inexpensively manufacture respective components including a reflector when desired information including kanjis (Chinese characters) is lighting- displayed with a wide visual field angle without deteriorating display quality by juxtaposing plural lighting display units neighboring each other at least along one face direction to form a concave or convex cured face. SOLUTION: A lighting display unit is provided with a frame base part 2, formed as a frame body having a curved surface and to be adjacent each other mounting substrates 4 plurally provided to mount evenly longitudinally and latitudinally in a matrix form LED light emitting elements 3 corresponding to dot matrix numbers to allow at least kanji display, a circuit substrate 5 to line-drive or column-drive the LED light emitting elements 3, and a reflector 6 having a concave reflecting face 6a provided corresponding to the LED light emitting elements 3 to be inserted, and formed by being dividedly constituted with width dimension provided by dividing the whole length along the curved face by an integer. The frame body 2, the mounting substrates 4, the circuit substrate 5, and the reflector 6 are integrally assembled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric light display unit used for various electric light displays, and more particularly to an electric light display unit used for electric light display outdoors on a display surface other than a flat surface.

[0002]

2. Description of the Related Art In various public facilities, railway or road facilities, electronic bulletin boards are widely used in which desired information is continuously displayed in a fixed manner or displayed while scrolling. According to these electronic bulletin boards, a desired number of electronic display units, for example, in which 16 or more dots are arranged in the vertical and horizontal directions, are prepared so that kanji can be displayed on the flat display surface. Are arranged side by side with no gap therebetween to form a flat display surface of the electronic bulletin board.

[0003] On the other hand, devices for displaying natural colors by mixing three primary colors of colors have been put to practical use in large electronic signboards in various large public facilities. Also in such a large electronic bulletin board, for example, a desired number of electronic display units each having a flat display section in the vertical and horizontal directions are prepared, and the flat display surface of the electronic bulletin board is configured by arranging them together without any gap. I am trying to do it. However, since the above-described light-emitting display unit is used to form a flat display surface, for example, when used for an annular curved display surface, a gap may be opened between the attached units, The display quality is degraded, for example, it becomes difficult to express colors according to the image.

Accordingly, the applicant of the present invention has disclosed Japanese Patent Application Laid-Open No. 09-161.
Japanese Patent Application Laid-Open No. 07-2007 discloses a light-emitting display unit in which a light-emitting element arranged along a curved surface is mounted on a bendable mounting substrate and a reflector is provided on the light-emitting element. By forming a plurality of electro-optical display units adjacent to each other along at least one surface direction such that the electro-optical display unit forms an arc-shaped curved surface that is convexly or concavely curved from a predetermined radius, desired information can be obtained. When lightning is displayed, excellent visibility is obtained without deteriorating the display quality and by increasing the viewing angle.

[0005]

However, according to the above-mentioned electro-optical display unit, since the light-emitting element mounted on the bendable mounting substrate is directly wired on the mounting substrate, the brightness is reduced. In some cases, it was not sufficient, and in some cases, outdoor use during the day was insufficient.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-described problems, and has been made in consideration of the above-described problems, and a plurality of electronic display devices are formed along at least one surface direction so as to form a convex or concave curved surface. When the desired information including the kanji information is electronically displayed at a wide viewing angle without deteriorating the display quality, sufficient brightness can be guaranteed even in outdoor use during the day, and each unit including the reflector It is an object of the present invention to provide an electronic display unit capable of manufacturing component parts at low cost.

In addition, it is another object of the present invention to provide an electro-optical display unit which can effectively display color reproduction by mixing colors of light-emitting elements of different colors, does not degrade display quality, and has a wide viewing angle and excellent visibility. .

[0008]

In order to solve the above-mentioned problems and achieve the object, according to the electro-optical display unit of the present invention, at least one surface direction is formed so as to form a convex or concave curved surface. Is a lightning display unit for lightning display in which a plurality of parts are juxtaposed in a state adjacent to each other, formed as a frame having the curved surface, a frame base adjacent to each other, and an LED light emitting element vertically and horizontally. A plurality of mounting substrates for mounting in the same matrix,
A circuit board connected to the mounting board for line and column driving of the ED light emitting element, and a concave reflecting surface provided so as to be inserted into the LED light emitting element and along the curved surface; The entire length is divided by an integer and the width is divided by an integer, and the reflector is provided with a reflector that is injection-molded to prevent the reflection surface from being under in a molding die, and the frame, the mounting substrate, and the The circuit board and the reflector are integrally assembled.

[0009] Further, a plurality of LED light emitting elements having different colors are mounted to mix colors.

Further, the reflector is characterized in that the connecting portion is bent so as to follow the curved surface.

[0011] The connecting portion is molded from the same or different resin material as the predetermined resin material together with the reflection surface.

[0012]

Embodiments of the present invention will be described below.

FIG. 1 is a plan view of an electronic display unit that is substantially common to each embodiment. First, in FIG. 1, the electro-optical display unit 1 is provided with a convex shape so as to be substantially circular as shown in FIG.
A 360-degree field of view can be provided.

It is also possible to provide a non-display section in one of the adjacent units to clearly indicate the starting position of the display.

FIG. 2B shows that the light-emitting display unit 1 is adjacent to a concave curved surface as shown in FIG.
It is possible to perform a display that widens the field of view. For example, when the object to be viewed is located inside as shown in the figure, a natural 360-degree field of view without any connection can be obtained.

Therefore, in order to arrange, for example, n pieces in a circular shape, each light-emitting display unit 1 has a width L along a curved surface determined from 2πR ÷ n = L (Equation 1).

Therefore, for example, a single character can display a 16-dot matrix of Chinese characters, and the width L along the arc (however, since the light-emitting display unit 1 is mostly a square, the vertical dimension is also L) is 96. In order to be able to use a total of 16 millimeters of the electro-optic display units 1 in millimeters to display a 360-degree viewing angle for one round, the above equation 1 is used.
The radius R is determined from R = Ln ÷ 2π (Equation 2), and the actual value is 244.6 mm. A suitable electric signboard having a diameter of about 50 cm can be completed, and sufficient brightness can be guaranteed in the reflector 6. So
It can be used for signs during the day.

The electronic bulletin board completed in this way is suspended from the ceiling for display in the store, or installed as appropriate such that a pillar is provided from the center.

Further, the width L of each light-emitting display unit 1 can be set as appropriate, and it is needless to say that the width L can be made smaller and larger than this, and it is not limited to the above-mentioned size. Furthermore, the viewing angle is not limited to the above-described 360-degree viewing angle, and can be directly attached to a wall surface by setting the viewing angle to, for example, 180 or 270 degrees.

Next, FIG. 2 is a three-dimensional exploded view showing a specific configuration of the convex electro-optical display unit 1 in FIG. The configuration of the unit in FIG. 1B is substantially the same as that of the unit in FIG. 1A except that the direction of the curvature is opposite, so that the description thereof will be omitted.

In FIG. 2, the frame base 2 is specially injection-molded using a predetermined resin material to have a uniform thickness so as to form a frame opening in the shape of a "sun" as shown in the figure. The frame base 2 is formed as a frame having a curved surface as shown in FIG. 1A, and forms a closed structure from left and right side surfaces 2d, an upper surface 2a, and a lower surface 2c which are adjacent to each other. A relay portion 2b is integrally formed of resin from the central portion of the left and right side surface portions 2d, and a reflector 6 described later is bonded to a space formed between the upper surface portion 2a, the lower surface portion 2c, and the relay portion 2b after being housed. It is configured to be fixed by such means.

The frame base 2 is integrally formed with four projections 2f for fixing a plate member 7 formed of an iron plate having sufficient strength as shown in the figure with screws (not shown). As a result, the strength in the completed state shown in the drawing is secured.

The plate member 7 is provided with four one-touch fasteners to fix the circuit board 5 for a column or line driver.

On the other hand, the LED light-emitting elements 3 at least as many as the number of dot matrices capable of displaying Chinese characters have a bare chip mounted inside and covered with a plastic lens on the outside, and at least in the optical axis direction along the substrate mounting direction. It has sufficient brightness. In recent years, bare chips corresponding to each color of RGB have been provided, and natural color display has become possible by combining them. In order to mount the LED light-emitting elements 3 vertically and horizontally equally in a matrix (for example, 4 columns × 8 rows), a corresponding number of through lands 4 a are formed on the flat mounting substrate 4.

The reflector 6 is formed of, for example, white polycarbonate resin using a predetermined molding die, and has a concave reflecting surface 6a through which the LED light emitting element 3 is inserted, for example, for 4 columns × 8 rows. Is completed to be integrally formed. For this reason, the entire length along the curved surface is divided so as to have a width L obtained by dividing the whole length by an integer, and the reflection surface 6a is prevented from being under in the molding die, thereby enabling injection molding.

In other words, by forming the reflector 6 in a plane so as not to bend, the entire reflecting surface 6a is prevented from being under, and by bending it into a concave or convex shape after completion, it follows the above-mentioned curved surface. To be deformed as follows. The reflector 6 is further formed with a flange portion 6f at an edge portion, and is provided with a portion serving as a fixing surface when bonding to the left and right side surface portions 2d of the frame base 2 and the ends of the relay portion 2b.

FIG. 3 shows that after the LED light-emitting element 3 is inserted into the four reflectors 6,
Shows a state where a band is attached. In this drawing, a holding portion 6d is further integrally formed on the reflector 6, and when all the LED light emitting elements 3 are stored in advance on the reflecting surface 6a of the reflector 6 for 4 columns × 8 rows, the holding portion 6d is lightly held by the holding portion 6d. In this way, it can be soldered later.

On the other hand, as shown in FIG. 2, the reflector 6 can accommodate the LED light emitting elements 3 for 4 columns × 8 rows, but is flat after injection molding, so that the upper or lower side as shown in FIG. By bending it into a curved shape, it is deformed along the curved surface. For this reason, the connecting portion 6g formed thinly
Are integrally formed as shown in the figure, and the connecting portion 6g is bent up and down by having a hinge function.

FIG. 4 is a cross-sectional view of a main part after completion. The same reference numerals are given to the components already described and the description is omitted, and the circuit board 5 is a line or column driving circuit chip. And are provided separately as shown. The plate member 7 is provided with a fixing screw hole so that a plurality of the fixing members can be fixed.

FIG. 5 is a sectional view taken along line XX of FIG. 2. The shapes of the left and right side portions 2d and the relay portion 2b are tapered as shown in FIG. It is easy to assemble by making it possible to infiltrate.

In the light-emitting display unit 1 configured as described above, the light-emitting elements of at least the number of dot matrices capable of displaying Chinese characters are mounted in the same matrix in the vertical and horizontal directions, as shown in FIG. The viewing angle A can be increased. Also, when the concave and curved surfaces are arranged, a natural display quality can be realized without interruption of characters and figures at the connection portions of the units.

When displaying natural colors, RGB
Since the respective light-emitting elements are uniformly arranged at the connection portion between the units, the same natural color mixture as at the other portions can be performed.

[0033]

As described above, according to the present invention, a plurality of electro-optical display units are arranged adjacent to each other along at least one surface direction so as to form a convex or concave curved surface. When displaying desired information including kanji information at a wide viewing angle without degrading the display quality, sufficient brightness can be guaranteed even in outdoor use during the daytime, and each component including the reflector is inexpensive. Can be provided.

In addition, it is possible to provide an electro-optical display unit which can effectively display color reproduction by mixing colors of light-emitting elements of different colors, does not degrade display quality, and has a wide viewing angle and excellent visibility. .

[0035]

[Brief description of the drawings]

FIG. 1 is a plan view of an electric light display unit 1. FIG.

FIG. 2 is a three-dimensional exploded view of the electric light display unit 1. FIG.

FIG. 3 is a completed view of the reflector of the electric light display unit 1.

FIG. 4 is a plan view showing a main part of the electric light display unit 1 cut away.

FIG. 5 is a sectional view taken along line XX of FIG. 2;

[Explanation of symbols]

 Reference Signs List 1 electric light display unit, 2 frame base, 3 LED light emitting element, 4 mounting board, 5 circuit board, 6 reflector, 6a reflecting surface, 7 plate member,

[Procedure amendment]

[Submission date] December 3, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

Claims (4)

[Claims] 1. An electro-optical display unit for electro-optical display in which a plurality of portions are arranged adjacent to each other along at least one surface direction so as to form a convex or concave curved surface, A frame base formed as a frame having and adjacent to each other, a plurality of mounting substrates provided for mounting the LED light emitting elements vertically and horizontally equally in a matrix, and a line and column driving the LED light emitting elements. A circuit board connected to the mounting board, having a concave reflecting surface provided so as to be inserted into the LED light emitting element, and being divided into widths obtained by dividing the entire length along the curved surface by an integer. Along with
A reflector that is injection-molded so as to prevent the reflection surface from becoming under in the molding die, wherein the frame, the mounting board, the circuit board, and the reflector are integrally assembled. Lightning display unit. 2. The light-emitting display unit according to claim 1, wherein a plurality of LED light-emitting elements having different colors are mounted to mix the colors. 3. The electro-optical display unit according to claim 1, wherein the reflector is formed so as to be along the curved surface by bending a connecting portion. 4. The electronic display unit according to claim 3, wherein the connecting portion is formed of the same or different resin material as the predetermined resin material together with the reflection surface.