JPS609831Y2 - light emitting diode indicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thin light emitting diode display device that can emit light from a plane.

Conventionally, flat light-emitting displays used for illuminating cassette tape windows, etc., preferably have a small built-in volume, but if a light-emitting diode is used as a light source, the amount of light is small and the light source is too small to fill the entire display surface. It requires some ingenuity to spread the light.

Therefore, as shown in FIG. 1, the optical path length was increased by shifting the display surface 19 from the position of the light emitting diode 12, thereby allowing the light on the display surface to shine brightly and uniformly.

However, the thickness of the display is 3rIr! Since the shaft fat plate 17 that covers the surface of the reflective frame 14 is as thin as approximately n and is so thin that it approaches the molding limit, the portion directly above the light emitting diode 12 will shine strongly.

For this reason, if the panel 20 to which the display is attached is made of a resin plate or a plate with metal foil, dotted light will be observed at the light emitting diode 12, which is inconvenient.

In addition, in order to fix the resin plate 17, a protruding pin 17 is used in accordance with customary practice.
', 17' are provided and their tips are welded, but the convex parts 11, 11 after welding are so large that they cannot be ignored compared to the size of the entire display (several hundred microns, so the overall thickness is ).

For this reason, the display has a protrusion on the back surface, and when it is attached to the panel 20, it tends to get caught on other parts, causing the display to come off the panel or the resin plate 17 to come off, which is inconvenient.

The present invention has been devised to overcome the above-mentioned disadvantages, and the present invention will be described in detail below based on embodiments.

FIG. 2 is a cross-sectional view of a light emitting diode display device showing an embodiment of the present invention, in which 1 is a printed circuit board, 2 is placed and fixed on the tip of the printed circuit board 1, and wiring is provided with thin metal wires 3, etc. This is a light emitting diode made of GaP or the like.

4 is a reflective frame made of white resin or the like, which surrounds the light emitting diode 2 with a substantially vertical reflective surface 5 and a gentle reflective surface 5';
It has a wide opening at the top.

It is preferable that the substantially vertical reflecting surface 5 has an inclination so as to cover the light emitting diode 2.

Further, it is preferable that the light emitting diode 2 is located at the upper opening end at the corner of the fan.

Reference numeral 6 denotes a transparent resin made of colorless and transparent epoxy resin, etc., which is filled inside the reflective frame 4.

Reference numeral 7 denotes a translucent resin plate that covers the surface of the reflective frame 4, and is preferably colored in the light emitting color of the light emitting diode 2 or a light tone of the emitting color.

This resin plate 7 is provided with a protrusion 8, and the surface of the protrusion 8 is textured to form a display surface 9.

This protrusion 8 is provided so as to be located directly above the gentle reflecting surface 5' of the reflecting frame 4.

A colored adhesive 10 is provided for fixing the resin plate 7 to the surface of the reflective frame 4.

The colored adhesive 10 is printed or coated so that it is present at least directly above the light emitting diode 2 and is not necessarily present directly below the display surface 9, and is coated with colorants such as dyes, paints, and pigments. By being kneaded, white, black,
Alternatively, it is colored (or dyed) in a color complementary to the color of the resin plate 7.

As described above, the present invention includes a light emitting diode 2, a reflective frame 4 that surrounds the light emitting diode 2 and has an opening above, and a display surface 9 that covers the surface of the reflective frame 4 and is located away from directly above the light emitting diode 2. A light-emitting diode display device comprising a translucent resin plate 7 having a display surface 9 and a colored adhesive 10 attached to the bottom surface of the resin plate 7 including at least a portion immediately above the light-emitting diode 2 except for the area directly below the display surface 9. Because there is a light emitting diode 2
Right above is colored adhesive 10 or colored adhesive 10 and resin plate 7
Since the light is blocked by the panel, the point of light cannot be observed until it passes through the panel as in the conventional case, and since the resin plate 7 is fixed by the colored adhesive 10, there is no protrusion on the back of the display. Moreover, even if a conventional protrusion is provided for positioning, it can be provided in a place where it will not get in the way, so the advantage of being thin can be fully utilized.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional display, and FIG. 2 is a sectional view of a light emitting diode display according to an embodiment of the present invention. 2... Light emitting diode, 4... Reflective frame, 7... Resin plate, 9... Display surface, 10
・・・・・・Colored adhesive.

Claims (1)

[Scope of utility model registration request] A light-emitting diode, a reflective frame that surrounds the light-emitting diode and has an opening above, a translucent resin plate that covers the surface of the reflective frame and has a display surface located away from a position directly above the light-emitting diode, A light-emitting diode display device comprising: a colored adhesive adhered to the bottom surface of a resin plate including at least a portion immediately above the light-emitting diode, excluding the area directly below the light-emitting diode.