JPS5834470Y2 - Optical semiconductor display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to optical semiconductor display devices, and particularly to improvements in light emitting display systems in optical semiconductor display devices.

Conventionally, one of the display systems having the function of a level meter using a plurality of semiconductor light emitting elements has a structure shown in a perspective view in FIG. 1 and in a sectional view in FIG.

In the figure, 1.1'... is a semiconductor light emitting device (
Reference numeral 2 denotes a substrate made of an electrically insulating material (hereinafter abbreviated as light emitting elements), and the light emitting elements are arranged in series on a wiring pattern 2a provided on one main surface of the substrate so as to form a display shape of a level meter.

Further, reference numeral 3 denotes a reflector which is disposed on the substrate 2 and has a reflecting surface 3.
a, 3 b...correspond to the light emitting element,
They individually surround the sides and reflect light.

Furthermore, the reflector is provided with a light diffuser 4 that covers at least the opening of the reflective surface, diffuses two parts of the light emitted from the light emitting element and the reflected light, and forms a part of the envelope.

When the above-mentioned optical semiconductor display device is used as a level meter, the number of light-emitting elements that light up changes as the level changes, and this is communicated by a digital display called number.

Therefore, there is a strong demand for a means for expressing level changes more sensually.

This invention is in response to the above-mentioned demand for improvements to the conventional optical semiconductor display device, and provides an improved structure that provides an analog display in order to make the level changes expressed by the optical semiconductor display device more perceptible. be.

The optical semiconductor display device according to this invention includes a plurality of optical semiconductor elements arranged in a series corresponding to a display shape on a substrate, and a series of optical semiconductor elements attached to the substrate, which are collectively surrounded. a reflector having a display-shaped aperture extending over the entire series; and a light diffuser attached to the reflector so as to cover the aperture, and sequentially and continuously light up the plurality of optical semiconductor elements. It is characterized by the fact that it becomes like a force.

Next, one embodiment of this invention will be described in detail with reference to the drawings.

In the diagram shown in FIG. 3 as a perspective view and in FIG. 4 as a cross-sectional view, 1, 1', . The light emitting elements described above are arranged in a series in the pattern 2a so as to form a display shape of a level meter.

A reflector 13 having one continuous reflective surface 13a that reflects the light emitted from the series of light emitting elements is disposed on the substrate, and the reflector is further covered with at least an opening of the reflective surface to reflect the light emitted from the light emitting elements and A light diffuser 4 is provided which diffuses a portion of the reflected light and forms part of the envelope.

With the above structure, although the illustrated example uses three light emitting elements, the display bar achieves an uninterrupted analog display even though the number of emitted light changes depending on the input level.

The appearance of this lighting is shown in Figure 5.

This figure shows the lighting appearance (brightness state) of a level meter according to an embodiment of the present invention using crosshatching lines, and the density of the crosshatching lines represents the brightness of the lighting.

Incidentally, for comparison, FIG. 5a shows the appearance of a conventional lighting device in the same manner as shown in the above figure.

Compared to conventional methods, this method is extremely effective in visually perceiving level changes, and when there are multiple rows as shown in Figure 6, it has the remarkable advantage of being able to be distinguished by length and easily identifying the state of level changes. .

Furthermore, this invention has the advantage that it is easy to implement, and only the reflector needs to be improved.

[Brief explanation of drawings]

1 and 2 show a conventional optical semiconductor display device. FIG. 1 is a perspective view, FIG. 2 is a sectional view, and FIGS. 3, 4, and 5.
The figures show one embodiment of the present invention; Fig. 3 is a perspective view, Fig. 4 is a sectional view, Fig. 5 is a front view showing the appearance of the lighting, and Fig. 5a is a conventional FIG. 6 is a front view showing the lighting appearance of another embodiment. Note that the same reference numerals in the figures indicate the same or corresponding parts, respectively. 1, 1'...Light emitting element, 2...Insulating substrate, 2a...Wiring pattern, 4...Light diffuser, 13...・Reflector, 13a...
・Reflective surface.

Claims (1)

[Scope of utility model registration request] a plurality of optical semiconductor elements arranged in a series corresponding to a display shape on a substrate; and an opening having a display shape that is attached to the substrate and surrounds the series of optical semiconductor elements and extends above the series. and a light diffuser attached to the reflector so as to cover the opening,
An optical semiconductor display device characterized in that the plurality of optical semiconductor elements are sequentially and continuously turned on.