JPH0496088A - Lightening display - Google Patents

Abstract

PURPOSE:To improve accuracy and to achieve a soft display by arranging plural display elements in order to make a hexagonal unit for each display picture element. CONSTITUTION:A unit for each display picture element is constituted in such a manner that plural display elements 2-1 and 2-2 in different colors are arranged vertically asymmetrically. By shaping the unit into hexagon and arranging the plural units, indentations on oblique lines are not made. Since the display elements are arranged vertically asymmetrically, each picture element is made to appear almost round even when the units, in spite of hexagon, are applied to a large display device which is looked from below. Also, accuracy in softness can be improved compared with that of rectangular units and, at the same time, soft display can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a matrix display device that displays letters and characters arranged in a matrix, and particularly to an electronic display device that constitutes a dot display unit.

[Conventional technology]

Neon signs have been used for a long time to display specified content using shapes and colors, but recently, dot display units (displays) have been used using light emitting diodes and discharge lamps. Display devices that have a pixel-based configuration and selectively turn on and off dot display units are becoming popular. This is because the displayed content can be changed by turning on/off each dot display, so unlike neon signs, the shape and color are not specified, and letters, patterns, and other characters can be displayed freely, which is not the case with neon signs. It has excellent points. Therefore, dynamic displays can be freely performed, such as displaying advertisements, electronic news, messages, etc.
It can be effectively used for guidance, etc. However, light emitting diodes and discharge lamps used as electronic indicators are designed so that their directional characteristics are high brightness toward the front. Therefore, there are problems in that the visibility of the displayed content from the lateral direction is poor, the display range is narrowed, and the display value is reduced accordingly.

In addition, neon signs light up at night more than before.
Matrix display devices were used exclusively for advertising purposes, such as displaying specific content, but because matrix display devices can freely display letters, patterns, and other characters, they can also be used to display electronic news, messages, and guidance, etc. It has come to be actively used not only at night but also during the day. However, as usage patterns become more diverse during the day, there are problems in that the contrast of the display becomes weaker due to the brightness of sunlight, and the visibility in the lateral direction becomes even worse.

Therefore, the applicant has proposed an electric light display that is highly visible over a wide angle, and the outline thereof will be explained below.

FIG. 4 is a diagram showing one embodiment of the electronic display device according to the present invention,
FIG. 5 is a diagram showing another embodiment of a unitized electronic display according to the present invention. In the figure, 11 is a package (case), 12 is the display element body, 13 and 15 are terminals,
14 indicates a display element.

In FIG. 4, a package (case) 11 has an inclined surface formed on the front side so as to increase the diffusion of light in the lateral direction (diagonally forward), and is made of, for example, a plastic case. In addition, when particularly high brightness is to be obtained in the front direction, the display element 14 is formed into a cylindrical shape as shown in the display element 14 of FIG. 5, and the tip thereof is formed into a spherical shape. As shown in FIG. 4, if the front of the package 11 is not completely spherical but has a slightly flattened shape, the angle of incidence of the light emitted from the light source in the lateral direction and hitting the inner wall of the package 11 becomes larger, and the light in the lateral direction becomes larger. In addition to increasing the transmittance, the reflected light can also be directed not forward but to the opposite side, making it possible to relatively increase the amount of light emitted in the lateral direction.

The example shown in Fig. 5 shows an example of improvement by arranging unitized display elements. For example, when arranging a plurality of display elements by resin molding, the central display element may be positioned forward. , the surrounding display elements are positioned backward, that is, in a spherical arrangement. In this way, the amount of light emitted in the lateral direction can be increased compared to arranging a plurality of display elements on the same plane.

FIG. 6 is a diagram showing an example of a display unit frame and a looper that constitute a dot display unit. In the figure, 21 is the base, 2
2 is a looper, 23 is a hole for mounting a display element, and 24 is a hole for mounting a base.

The example shown in FIG. 6 is a display unit frame that uses 4×4 display elements to constitute a one-dot display unit, and in particular, the looper 22 is tilted downward as shown in FIG. 6(b). It is a characteristic of

Generally, large displays are installed outdoors at a high location, and the display surface is rarely below eye level. On the other hand, if the pitch between the display elements is shortened as much as possible and the display elements are arranged closely, it becomes possible to display fine details and improve the image quality and content of the display. Installation will be limited in space.

If the pitch between the display elements is set to the amount necessary for mounting the looper 22, the display element and the looper 22 will be too close together, and the light from the display element will be avoided by the looper 22 below it, making it difficult to see downward. There may be a problem with the corners becoming narrower. In such a case, the position of the looper 22 is either structurally forced to be in the center of the pinch of the hole 23 for mounting the display element, or if the looper 22 is tilted downward as shown in the same figure (bl), the display In the relationship between the element and the lower looper 22, less light is avoided by the lower looper 22, and the display effect for the downward direction can be improved.The same applies even when the pitch between display elements is long. Moreover, in such a case, the looper 22 may be arranged below the center of the pitch between the display elements.

By the way, when a light emitting diode is used as a display element, there is a problem that generally a red element is used, and red is harsh on the eyes. To improve this problem, for example, as shown in FIG. 5, an orange display color can be created by mixing yellow or yellow-green elements and red elements in the display element 23 and arranging them alternately. .

In this case, red is highly visible even in sunlight, but
Colors other than red have poor visibility in sunlight, so if elements of different colors are arranged alternately or in a staggered manner as shown, the display color will be close to red in sunlight, increasing visibility. be able to.

[Invention or problem to be solved]

However, in the case of the above-mentioned dot display, as is well known, when the total number of pixels is small, the resolution is low, and even if horizontal lines are sharp, diagonal lines have poor definition. Particularly in the case of the rectangular display unit shown in FIG. 6, the jagged edges become noticeable.

Also, if you adjust the brightness to a moderate level at night, the brightness during the day will be insufficient, and conversely, if you adjust the brightness to a moderate level during the day, the nighttime brightness will become too bright, making it difficult to adjust the brightness at night and during the day. There is a problem.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an electronic display device that improves definition and enables soft display.

[Failure to solve the problem]

To this end, the electronic display of the present invention is characterized in that the display pixel unit is formed into a unit by an array of a plurality of display elements, and the external shape of the unit is hexagonal. Further, the center of the vertical arrangement of display elements is shifted from the center of the unit, and the number of display elements arranged is vertically asymmetrical. Furthermore, a red display element is arranged in a ring shape around the center and display elements of different colors are arranged in a mixed manner, so that the red display element group and other display element groups can be lit separately. shall be.

[Effect]

In the electronic display of the present invention, the display pixel unit is formed into a unit by an array of a plurality of display elements, and the external shape of the unit is hexagonal, so that jagged diagonal lines are eliminated, and
Since the number of display elements arranged is vertically asymmetric, it is possible to display each pixel as a circle, even in a hexagonal unit.
Compared to a rectangular unit, it can make the display screen feel softer. Furthermore, because the red display element is placed in a ring shape around the center and the display elements of different colors are arranged in a mixed manner, even in an array of multiple display elements, the display pixels appear more circular, and the state At night, only the red display element group is turned off, and during the day, the red display element group is also turned on to improve visibility.

〔Example〕

Examples will be described below with reference to the drawings.

FIG. 1 is a diagram showing one embodiment of the electronic display device according to the present invention, in which FIG. The same figure (d) is a central vertical cross-sectional view,
The same figure (e) is a rear view, the same figure (f+ shows a lighting circuit. In the figure, l is a bracket, 2-1.2-2 is a display element, 3 is a printed circuit board, 4 is a connector, 5- 1. 5-2 is a looper, and 6 is a mounting screw.

In FIG. 1, a bracket 1 has a hexagonal outer shape, and arranges a plurality of display elements 2-1, 2-2 to form a unit in display pixel units.
．． Corresponding to the arrangement position of 2-2, a looper 5 similar to the looper 22 explained in FIG.
-1.5-2. The display element 2-1 is a display element using a red light emitting diode, for example, and the display element 2-2 is a display element using a yellow or yellow light emitting diode. The former red display element 2-1 is arranged in a ring shape at the center and around it.

The lighting circuit includes the display element 2-1 group and the display element 2-1 group.
It has a mode in which all elements of the second group are lit, and a mode in which only the display elements 2-2 group are lit. During the day, you can increase visibility by turning on the former mode, and at night, you can soften the display by turning on the latter mode, which excludes the harsh red color.

In addition, the display elements 2-1.2-2 constitute an array in five columns, but the center of the vertical array is slightly shifted upward from the center of the unit, and the number of display elements arrayed on the upper side is reduced. This makes it vertically asymmetrical.

Such asymmetrical arrangement of the number of display elements and red display element 2
In combination with the annular arrangement of the -2 group, the pixels can be made to look more round, especially when viewed from below, both when the front element is lit and when the display element 2-2 group is lit except for red. In addition, as shown in the same figure (dl cross section) and the same figure (el), space can be secured for arranging the connector 4 for external connection on the lower side away from the terminals of the display element, so the display element can be placed on the printed circuit board. It can be placed side by side with the connection terminal of the 2-1, and the protrusion in depth can be reduced.In addition, the lighting circuit of the display element is one circuit in which the red display elements 2-1 are connected in series, as shown in the same figure (f). In contrast, it is sufficient to provide a plurality of circuits of display elements 2-2 for colors other than red, in which the same number of display elements 2-2 are connected in series.

FIG. 2 is a diagram showing an example of the configuration of a pixel using the electronic display device of the present invention, and FIG. 3 is a diagram showing an example of a display element using the electronic display device of the present invention.

By forming the unit into a hexagonal shape as described above, the l unit not only constitutes one pixel, but also a second pixel.
As shown in Figure (a), the density of the display element can be increased even if one pixel is constructed by combining three units, four units, and IO units. In other words, in the case of a round shape, when a plurality of units are combined, there will be noticeable gaps between adjacent units and the density of display elements will be low, but when using the unit of the present invention, the density of display elements will be low. Spaces between units can be reduced. Therefore, visibility can be improved. In particular, as shown in Figure 2(a), three units are combined in an inverted triangle to form one unit.
By configuring pixels, it is possible to prevent a decrease in visibility from the left and right sides, and it is possible to provide a jumbo-sized display device that is sufficiently usable for wide-angle display.

Furthermore, in each display element of the unit, a plurality of (three) LEDs are arranged horizontally as shown in the internal front view of Fig. 3(a), and the light emitting surface is arranged horizontally as shown in the bottom view of Fig. 3(C). By making it concave, visibility in the left and right directions can be improved. In other words, if the light emitting surface is made flat, the amount of light will be less in the left and right direction than in the front, but if it is made concave, the amount of light secured by the leftmost LED for the right direction and the rightmost LED for the leftward direction can be increased. can. In addition, to improve downward visibility, the lens shape can be made to face downward as shown in the side view of Figure 2 (b), or by changing the shape of the lens to an inverted triangle or lower side as in the example shown in Figure 2 (al). The display element may be attached in a semicircular shape, or the display element itself may be tilted downward.

Note that the present invention is not limited to the above embodiments, and various modifications are possible. For example, in the above embodiment, red display elements and other yellow or yellow-green display elements were mixed and arranged at a ratio of 1:3, or this ratio was changed as appropriate depending on the intensity of the red color and other conditions. Needless to say, this is a good thing. Furthermore, the light-emitting element may be something other than a light-emitting diode, or it may be configured such that display elements of yellow or yellow-green, or display elements of several colors are mixed and arranged in the same manner as red.

The orientation of the hexagon may also be rotated by 90°.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the display pixel unit is formed into a unit by an array of a plurality of display elements, and the external shape of the unit is made hexagonal, so that the diagonal lines are not jagged. Since the number of display elements arranged is vertically asymmetrical, even if it is a hexagonal unit, each pixel can be made to look close to a circle even when applied to a large display device viewed from below, making the display easier than a rectangular unit. You can make the screen feel softer. Furthermore, we have arranged a red display element with particularly high visibility in a ring around the center and a ring around it, and display elements of different colors are arranged in a mixed manner, so even in an array of multiple display elements, the display pixels are closer to a circle. In this state, only the red display element group is turned off at night, and the red display element group is also turned on during the day, so that appropriate visibility can be obtained depending on the surrounding brightness during the day and night. This allows for soft display while increasing definition.

[Brief explanation of drawings]

FIG. 1 is a diagram showing one embodiment of an electronic display device according to the present invention,
FIG. 2 is a diagram showing an example of the configuration of a pixel using the electronic display device of the present invention, FIG. 3 is a diagram showing an example of a display element using the electronic display device of the present invention, and FIG. 4 is a diagram showing an example of the configuration of a pixel using the electronic display device of the present invention. FIG. 5 is a diagram showing another embodiment of the electronic display unit according to the present invention, and FIG. 6 is a diagram showing a display unit frame and louver constituting a dot display unit. It is a figure which shows an example. 1... Bracket, 2-1.2-2... Display element,
3... Printed circuit board, 4... Connector, 5-1.5
-2...louver, 6...screws for installation. Applicant Conlux Co., Ltd. Matsumoto Agent Patent Attorney Ryukichi Abe (7 others) (f) Todo e+-toQ+>>-Snoring (cL) Figure 2 (C1 (e) (bn(^)) [ C) Figure 3(b)

Claims (4)

[Claims] (1) An electronic display characterized in that a display pixel unit is formed into a unit by an array of a plurality of display elements, and the external shape of the unit is hexagonal. (2) The electronic display device according to claim 1, wherein the center of the vertical arrangement of the display elements is shifted from the center of the unit, so that the number of display elements arranged vertically is asymmetrical. (3) The electronic display device according to claim 1, characterized in that a red display element is arranged in a ring shape at the center and around the red display element, and display elements of different colors are arranged in a mixed manner. (4) The electronic display device according to claim 3, characterized in that the red display element group and the other display element groups are configured to be lit separately.