JPH04132103A - Light emitting display device for electronic apparatus - Google Patents

Abstract

PURPOSE:To decrease the number of light sources that are radiated uniformly so as to reduce the cost by making a constitution with polished surfaces, and rough surfaces formed at surfaces other than the polished surfaces of a light permeation member thereby allowing light from light sources to be diffused by means of rough surfaces. CONSTITUTION:A printed board 5 having a plurality of LEDs 4 that are light sources, is fixed at the frame 3 of an opening portion 2. There is provided a light transmission member 8 at which an engaging portion 6 engaged with the opening portion 2 and a surrounding portion 7 that is bent downward from the portion 6 back side and surrounds LEDs 4, are integrally formed out of a light transmission material. Also, polished surfaces 9, 10 are formed at the surfaces of the portion 6 exposed to the outside through portion 2, and polished surfaces 11 are formed at the surfaces opposite to LEDs 4 at the portion 7. Rough surfaces 12 which diffuse light are formed by crimping or the like at one surface of the member 8, that is, a back surface opposite to the surface 9, a side surface opposite to the surface 10, an upper surface and the like opposite to the surfaces 11.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a light emitting display device for electronic equipment.

2. Description of the Related Art In conventional electronic devices, the operating status is displayed by lighting a light source such as an LED. That-
Examples are shown in FIGS. 6 and 7. 1 is an outer casing of an electronic device, and an opening 2 is formed on the surface of this outer casing 1;
A printed circuit board 20 having a large number of LEDs 4 serving as light sources is held in a frame 3 fixed inside the outer casing 1 so as to face the frame 3 . Further, a transparent member 21 made of acrylic resin or the like is fitted into the opening 2 . Further, the space between the back surface of the light-transmitting member 21 and the LED 4 is surrounded by a reflection plate 22 fitted to the periphery of the printed circuit board 20. Therefore, the lighting state of the LED 4 can be confirmed through the light-transmitting member 21.

Problems to be Solved by the Invention There is a need to be able to check the operating status of electronic equipment from a distance.
Therefore, it is necessary to increase the light emitting area of the light-transmitting member 21, and the number of LEDs 4 is correspondingly large. However, L
E and D 4 are directional, and the number can be increased and the transparent member 2
If the separation distance from 1 is not increased, the outline of the LED 4 will be reflected, making it impossible to obtain a high-quality display state. In addition, by increasing the number of LEDs 4 and providing a reflector 22 that diffuses the light from the LEDs 4, uneven light emission can be alleviated, but there is a problem in that the cost increases and the space for disposing the LEDs 4 also increases.

Means for Solving the Problems A light source disposed outside the edge of the opening on the back side of the opening formed in the outer casing of an electronic device, a fitting part fitted in the opening, and the back side of the fitting part. A light-transmitting member integrally formed with a surrounding portion that is bent from the side and surrounding the light source, and polishing formed on a surface of the light-transmitting member protruding from the opening and a surface facing the light source. and a rough surface formed on a surface other than the polished surface of the light-transmitting member.

The light from the active light source enters from the polished surface of the surrounding part of the transparent member and is diffused by the rough surface formed on the surface of the transparent member.
It is possible to efficiently focus the light from the light source onto the polished surface of the mating part without letting it escape to the surroundings, thereby brightening the entire surface of the polished surface exposed to the outside at the mating part, and
It is possible to emit light uniformly, therefore, the number of light sources can be reduced, and since the light-transmitting member also has the function of a reflector that diffuses the light from the light source, there is no need to provide a separate reflector. This makes it possible to reduce costs, and furthermore, by arranging the light source near the outside of the opening edge on the back side of the opening, it becomes possible to reduce the space for arranging the light source.

Example An 11th example of the present invention! This will be explained based on FIGS. 1 to 5. Reference numeral 1 denotes an outer casing of an electronic device. The outer casing 1 has an opening 2 formed at the corner of the front and side. A frame 3 fixed vertically inside the opening 2 has a frame 3. A printed circuit board 5 having a plurality of LEDs 4 as a light source is fixed. These LEDs 4 are located near the outside of the opening edge on the back side of the opening 2 . However, opening 2
The fitting part 6 fitted into the fitting part 6 and the surrounding part 7 which is bent downward from the back side of the fitting part 6 and surrounds the LED 4 are integrally formed of a transparent material such as acrylic resin. A light member 8 is provided. Further, a polished surface 9.10 is formed on the surface of the fitting portion 6 exposed to the outside from the opening 2, and a polished surface 11 is formed on the surface of the surrounding portion 7 facing the LED 4.

Other surfaces of the light-transmitting member 8 , namely, the back surface facing the polished surface 9 , the side surface facing the polished surface 10 , the top surface facing the polished surface 11 , the entire periphery of the surrounding portion 7 , and the fitting portion 6 A rough surface 12 for diffusing light is formed on the lower surface of the light emitting diode by means of texture processing or the like.

In such a configuration, the light from the LED 4 enters through the polished surface 11 of the surrounding portion 7 of the transparent member 8 and is diffused by the rough surface 12, so that the light from the LED 4 is efficiently fitted without escaping to the surroundings. The light can be focused toward the polished surfaces 9 and 10 of the joint 6, thereby brightening the entire surface of the polished surfaces 9 and 10.
Moreover, it is possible to emit light uniformly. As a result, L
The number of ED4 can be reduced, and the light-transmitting member 8
Since it also has the function of a reflector to diffuse the light of the LED 4, there is no need to provide a separate reflector, and therefore costs can be reduced. Furthermore, by arranging the LED 4 near the outside of the opening edge on the back side of the opening 2, the L
It is also possible to reduce the space for ED4.

Although the LEDs 4 individually emit two colors of light, red and green, they may also emit light of one color. Further, a miniature light bulb may be used instead of the LED 4.

Effects of the Invention As described above, the present invention includes a light source disposed outside the edge of the opening on the back side of the opening formed in the outer casing of an electronic device, a fitting portion fitted into the opening, and a fitting portion fitted into the opening. a light-transmitting member integrally formed with a surrounding portion that is bent from the rear side of the joint portion and surrounding the light source; a surface of the light-transmitting member that protrudes from the opening; and a surface facing the light source; The formed polished surface and
and a rough surface formed on a surface other than the polished surface of the light-transmitting member, so that light from the light source enters from the polished surface of the surrounding portion of the light-transmitting member, and the rough surface is formed on the surface of the light-transmitting member. Because it is diffused by the rough surface, the light from the light source can be efficiently focused on the polished surface of the mating part without escaping to the surroundings. The entire surface of the screen can be illuminated brightly and uniformly,
Therefore, the number of light sources can be reduced, and
The light-transmitting member also functions as a reflector that diffuses the light from the light source, so there is no need to provide a separate reflector, which can reduce costs. By arranging the light source near the outside, it is possible to reduce the space for arranging the light source.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention,
Figure 1 is a longitudinal front view, Figure 2 is a longitudinal side view, Figure 3 is a perspective view, Figure 4 is a perspective view of the transparent member seen from the front side, and Figure 5 is a view of the transparent member seen from the back side. A perspective view, FIG. 6, and FIG. 7 show a conventional example, with FIG. 6 being a front view and FIG. 7 being a longitudinal side view. 1... Housing, 2... Opening, 4... Light source, 6...
- Fitting part, 7-... Surrounding part, 8... Transparent member, 9,
10, 11...Polished surface, 12...Rough surface

Claims (1)

[Claims] A light source arranged outside the opening edge on the back side of an opening formed in an outer casing of an electronic device, a fitting part fitted into the opening, and a light source bent from the back side of the fitting part. a light-transmitting member integrally formed with a surrounding portion surrounding the light-transmitting member; a polished surface formed on a surface of the light-transmitting member protruding from the opening and a surface facing the light source; and a polished surface of the light-transmitting member. a rough surface formed on a surface other than the polished surface.