JPH0342471Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a light-emitting display body that is used as a signboard, etc. that lights up a predetermined display pattern in various lighting modes, and as a substitute for a signboard, etc. when not lit. .

BACKGROUND TECHNOLOGY As a light-emitting display for displaying a predetermined display pattern by lighting, the present applicant overlaid a mask plate in which a large number of through holes were formed on a display substrate, and formed light-emitting elements in a predetermined display pattern. We have already proposed a structure in which the light emitting part is formed by selectively storing the light in a through hole so that the light emitting part is exposed.

Problems to be Solved by the Invention However, with the above light-emitting display, the display pattern can only be seen when the light-emitting elements are turned on, but the display pattern cannot be seen when the light-emitting elements are turned off, even if the surroundings are bright. There was a problem that they could not serve as a substitute for signboards, etc.

The present invention was developed in view of the above circumstances, and its purpose is to enable the display pattern to be seen even when the light-emitting elements are turned off, and to sufficiently serve as a substitute for signboards, etc. Moreover, it is an object of the present invention to provide a useful light-emitting display in which display patterns can be more clearly seen when the light-emitting elements are turned on.

Means for Solving the Problems In order to solve the above problems, the present invention superimposes a mask plate in which a large number of through holes are formed on a display substrate, and arranges light emitting elements into a predetermined display pattern. In a light-emitting display body in which a light-emitting portion is formed by selectively housing a light-emitting element in a through-hole, the inner surface of the through-hole housing a light-emitting element is formed into a light-reflecting surface that has approximately the same color as the light emitted by the light-emitting element; The gist is that the inner surface of the through hole that does not accommodate the element and the surface of the mask plate are colored in a color different from the color of light emitted by the light emitting element.

Effect of the invention According to the light-emitting display body having such a structure, the inner surface of the light-transmitting device housing the light-emitting element is a light-reflecting surface having almost the same color as the luminescent color of the light-emitting element, and the inner surface of the other transparent holes and the mask plate are Since the color is different from the surface, even when the light-emitting element is off, if the surroundings are bright, the display pattern can be seen visually due to the difference in color, and it can be used as a substitute for signboards, etc. able to demonstrate. Moreover, when the light-emitting element is turned on, only the colored light of a specific wavelength emitted from the light-emitting element is reflected by the inner surface of the through-hole, which is a light-reflecting surface with almost the same color as the emitted light, and the different-colored external light of a different wavelength is absorbed. As a result, the color clarity of the light emitting portion increases, and the visibility of the display pattern further improves.

Example Hereinafter, the present invention will be described in detail with reference to Examples.

FIG. 1 is a perspective view showing an embodiment of the light emitting display of the present invention, and FIG. 2 is an enlarged sectional view taken along the line - - in FIG. 4 indicates the light emitting part.

This display substrate 1 has a conductive pattern 5 formed on the back surface of the substrate by etching a copper-clad laminate whose base material is glass epoxy resin, paper phenol, etc. , mask plates 2 in which mortar-shaped through holes 6 are arranged in an 8×8 matrix are overlapped and attached by fitting with screws or the like (not shown). This mask plate 2 is used to improve visibility by enlarging the apparent light emitting part (light emitting dot) and preventing light from leaking to adjacent light emitting parts. Select the through holes 6′ from among the through holes 6 so as to form a display pattern of the character “I” in katakana,
An LED lamp 3 is housed inside to form a light emitting section 4. A lighting circuit is constructed by inserting the leads 9, 9 of each LED lamp 3 into the lead insertion holes 8, 8 of the display substrate 1 and soldering them to the conductive pattern 5 on the back surface of the substrate.

The inner surface 7' of the through hole 6' that accommodates the LED lamp 3 of the mask plate 2 has an LED
A light reflecting surface having substantially the same color as the emitted light from the lamp 3 is formed by applying a light reflecting paint 10 having substantially the same color as the emitted light from the lamp 3 or the like. That is, if the LED lamp 3 has a built-in light emitting diode such as GaAls or GaPZn that emits red light,
Accordingly, a resin paint containing a red coloring agent (for example, cadmium red, pigment scarlet, blueish red, etc.) is applied to make the inner surface 7' a red light reflecting surface, and the LED For example, if the lamp 3 has a built-in light emitting diode such as GaP or GaPN that emits green light,
Accordingly, a resin paint containing a green coloring agent (for example, phthalocyan green) is applied to make the inner surface 7' a green light reflecting surface.

In contrast, the inner surface 7 of the other through hole 6 that does not accommodate the LED lamp 3 and the surface 11 of the mask plate 2
is a paint 12 of a different color from the emission color of the LED lamp 3,
It is colored in a color different from the emitted light color by means of coating No. 13 or the like. As the paint 12 applied to the inner surface 7 of the through hole, for example, a white or silver paint is suitably used.
As the paint 12 to be applied to 1, for example, a black or gray non-reflective paint is preferably used.

The light-emitting display with such a configuration can blink the LED chips 3 in one or more columns vertically or horizontally by performing blinking control using a blinking control circuit connected to the display, or can blink all the LED chips 3 making up the display pattern. The display pattern can be displayed in a desired blinking manner, such as by blinking the LED lamps 3 at the same time, but in that case, the inner surface 7' of the through hole 6' housing the LED lamps 3 will be Since the light reflecting surface has almost the same color as the emitted light color of the LED lamp 3, only the colored light of a specific wavelength emitted from the LED lamp 3 is reflected by the inner surface 7' of the through hole, and the colored light of a different wavelength is reflected. Most of the external light is absorbed. Therefore, the clarity of the color of the light emitting section 4 is significantly increased, and the visibility of the display pattern is further improved. Moreover, the inner surface 7' of the through hole 6' that accommodates the LED lamp 3 is the same as the inner surface 7' of the other through hole 6.
Since the color is different from the surface 11 of the mask plate 2,
Even if the LED lamp 3 is off, if the surroundings are bright, such as during the day, the display pattern can be sufficiently seen due to the difference in color.

Such an effect is achieved not only on the inner surface 7' of the through hole 6' in which the LED lamp 3 is housed, but also on the bottom surface of the light emitting section 4, that is, the exposed surface 14 of the display substrate 1.
This becomes even more noticeable when the light reflecting surface has substantially the same color as the light emission color of the lamp 3, so it is preferable that the exposed surface 14 of the display substrate 1 also be configured as a light reflecting surface of the same color. In addition, a translucent coating film of almost the same color as the emitted light color is provided on the surface of the LED lamp 3, and
The translucent sealing resin itself can be colored in almost the same color as the emitted light, or the translucent cap can be colored in almost the same color as the emitted light.
By covering the LED lamp 3, etc., the LED
It is also preferable to color part or all of the lamp 3 in substantially the same color as the emitted light, since the above-mentioned effects become even more remarkable. Further, it is preferable that the exposed surface (bottom surface) of the other through-hole 6 is also coated with a different paint, such as white or silver, from the through-hole 6' portion. Furthermore, if the inclination angle θ of the inner surfaces 7, 7' of the through holes 6, 6' is set to at least 120 degrees as shown in FIG. Since the area of 7' is increased and the viewing angle is increased, the above effects become even more remarkable, which is preferable.

Effects of the invention As is clear from the above explanation, according to the light-emitting display of the present invention, the visibility of the display pattern is further improved because the color clarity of the light-emitting part is increased when the light is turned on, and even when the light is turned off, the visibility of the display pattern is improved. When the display is bright, the display pattern can be visually recognized due to the difference in color, so that the display can effectively serve as a substitute for a signboard or the like.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the light-emitting display of the present invention, and FIG. 2 is an enlarged cross-sectional view taken along the - line in FIG. 1. 1... Display board, 2... Mask plate, 3... Light emitting element (LED lamp), 4... Light emitting part, 6, 6'
...Through hole, 7, 7'...Inner surface, 11...Surface of mask plate.

Claims (1)

[Scope of utility model registration request] A light-emitting display in which a mask plate with a large number of through holes is stacked on a display substrate, and light-emitting elements are selectively housed in the through-holes to form a predetermined display pattern to form a light-emitting section. In this method, the inner surface of the through hole in which the light emitting element is housed is formed into a light reflecting surface that has approximately the same color as the light emission color of the light emitting element, and the inner surface of the through hole that does not accommodate the light emitting element and the surface of the mask plate are configured to reflect the light emitted by the light emitting element. A light-emitting display body characterized by being colored in a different color.