JPH0244312Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a light emitting display panel.

Conventional technology and its problems Traditionally, incandescent light bulbs and neon tubes were used to display characters, figures, etc. using light-emitting bodies, but recently, light-emitting diodes (hereinafter referred to as LEDs) have been used. There are many.

In such cases, LED lamps can be directly connected by soldering, or LED chips can be bonded to a printed circuit board or the like to form a dot matrix light-emitting display to obtain a light-emitting display of desired characters, figures, etc. That's what I do.

However, when LED lamps are connected by soldering to form a display pattern, the soldering work is particularly troublesome, and when using a dot matrix light emitting display, accessory devices such as matrix drive circuits are required. This type of display is expensive because it requires a large number of pixels, and if only a predetermined pattern is to be displayed blinking, such a display becomes uneconomical.

The present invention solves the above-mentioned problems, and provides a light-emitting display panel with easy wiring and easy change of display pattern.

Means for Solving the Problems In other words, the light emitting display panel of the present invention comprises light emitting lamps each having a light emitting element sealed in a translucent resin and connected in a chain with a current-carrying wire. It is constructed by combining a lamp assembly and a panel plate having through holes into which the light-emitting lamps constituting the assembly are inserted from the back side.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an example diagram showing a connected body A of luminescent lamps forming a part of the present invention, and FIGS. 2a and 2b are longitudinal cross-sectional structural views of one embodiment of the luminescent lamp, respectively.

As shown in these figures, the luminous lamp 1
is formed by sealing a light emitting element 2 such as an LED chip in a translucent resin 10, and the one shown in FIG. It is encapsulated and shaped like a cannonball. Then, each of them is connected to each other in a chain shape by a current-carrying wire 3 to form a connected body A. In this way, each of the light emitting lamps 1 constituting the connected body A is connected in series as shown in FIG.

In FIG. 4, a panel board 4 is shown. This panel board 4 is constructed by applying a light-reflecting paint to the inner circumferential surface in order to increase the luminous flux density of the light emitting element emitted from the light emitter lamp 1, or by using a white material for the panel board 4. A large number of through holes 41 are perforated to form reflective surfaces, and when the light emitting lamp 1 is inserted into the through hole 41, the surface of the panel board 4 has a large number of through holes 41 formed with reflective surfaces. A dark-black light-absorbing paint is applied to make the light emitted stand out and clear.

The light-emitting lamps 1 connected in a chain by the current-carrying wires 3 are inserted into the through-holes 41 from the back side of the panel board 4, as shown in FIGS. 5a and 5b. In this case, if the through hole 41 into which the light emitter lamp 1 is inserted is arbitrarily selected, the panel plate 4 can be
A desired light emission pattern can be displayed by lighting. In this case, the through hole 41 of the panel board 4 is formed of an elastic material, and when the light emitting lamp 1 is inserted into the through hole 41 of the panel board 4, it is fixed so that it will not fall out due to the frictional force caused by elastic deformation. However, as shown in FIGS. 5a and 5b, a stopper portion 1a is provided at the bottom of the light-emitting lamp 1, so that the position of the light-emitting lamp 1 is fixed when inserted into the through hole 41. It's good to be able to do it. In addition, in the case shown in FIG. 5b, the through hole 41 of the panel plate 4 is formed in a mortar shape to increase the apparent diameter of the light emitting part, and a light diffusing material is provided on the upper surface of the panel plate 4. It is covered with a translucent sheet 5 mixed with.

FIG. 6 also shows a "Takiron" structure in which a connected body A of four independent light-emitting lamps is assembled to the panel board 4.
A wiring diagram is shown when a display pattern is configured. In such a case, the current-carrying wires 3 connecting the luminous lamps 1 to each other in a chain form are connected to the luminous lamps 1.
In order to increase the degree of freedom in assembling the lamp to the panel plate 4, it is preferable to make the wire longer.If the gap between adjacent luminous lamps 1 is still large, connect the current-carrying wire 6 for the catch with a connecting tool. 7 to connect and use. Even if the length of the current-carrying wire 3 is increased in this way, the current-carrying wire 3 is hidden behind the back side of the panel board 4, so there is no problem in appearance. Also,
In order to equalize the brightness of the light-emitting lamps 1 of each display pattern formed, a dummy resistor (not shown) is connected to each connected body A in consideration of the internal resistance of the light-emitting lamps. It is desirable to keep the current flowing through the body elements uniform.

In constructing the light-emitting display panel of the present invention having the above structure, the cross-sectional shape of the light-emitting lamp is selected to be any shape such as a circle, triangle, square, or other polygon, and in this case, the panel board The through hole 41 of No. 4 also has a shape corresponding to the cross-sectional shape of the light-emitting lamp 1.

Although the light-emitting lamps constituting the light-emitting display panel of the present invention do not have any practical problems even if they do not have a light-reflecting surface, in order to prevent light leakage from the rear and increase the brightness of the light-emitting part, It is even better to provide a light reflecting surface on the bottom part. Moreover, although the light-emitting lamp is shown as having one built-in light-emitting element, it goes without saying that a lamp having a plurality of built-in light-emitting elements may also be used. Furthermore, it goes without saying that it is desirable to provide a translucent sheet containing a light diffusing agent on the upper surface of the panel board, both from the viewpoint of appearance and from the viewpoint of making the luminance of the light emitting part uniform.

Effects of the invention The light-emitting display panel of the invention has the above-described structure, so the light-emitting lamp can be inserted from the back side of the panel board.
A desired display pattern can be formed simply by inserting it into the through hole of the panel board.

In addition, in this case, the panel board also functions as a mask plate that improves visibility when the light-emitting lamp emits light.
There is no need to form a dedicated reflective surface that reflects the light emitted from the LED, and the light-emitting lamp can also be constructed at a simple cost, allowing it to be constructed at low cost.

The light-emitting lamps are inserted into the panel plate from the back side of the panel plate, and the current-carrying wires connecting the light-emitting lamps are hidden on the back side of the panel plate, so that the appearance is not spoiled.

In addition, the light-emitting lamps are connected in a chain by current-carrying wires, and the light-emitting lamps are connected in series with each other, so there is only one current-carrying wire between the light-emitting lamps, and the current flowing through them is small. The luminance of the light-emitting lamps forming a continuous series of display patterns also becomes uniform.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a connected body of luminous lamps, FIGS. 2 a and b are longitudinal cross-sectional structural diagrams of the luminous lamp, and FIG. 3 is a diagram showing the connection state of the luminous elements of the luminous lamp. Figure 4 is an example of a panel board, Figures 5a and 5b are diagrams showing how to attach a light emitting lamp to a panel board, and Figure 6 is an example of a display pattern formed using the light emitting display panel of the present invention. Show the diagram. DESCRIPTION OF SYMBOLS 1...Light-emitting lamp, 2...Light-emitting element such as LED, 3...Electrifying wire, A...Connection of light-emitting lamps, 4...Panel board, 41...Through hole thereof.

Claims (1)

[Scope of utility model registration request] A connected body of light emitting lamps formed by connecting light emitting lamp elements in a chain with current-carrying wires, each of which is formed by sealing a light emitting element in a translucent resin; A light-emitting display panel constructed by combining a panel plate with a through hole into which a light-emitting lamp can be inserted from the back side.