JPS63184792A - Decorated product emitting light at random cycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ornament that emits light by itself and is intended to be hung or carried on a wall, a shop window, or the human body.

When it comes to catching people's attention, there is nothing better than objects that are shiny and emit their own light. In keeping with this idea, flashing lights have been used for advertising towers, neon signs, and shop window displays since ancient times. On the other hand, however, the naked eye easily becomes accustomed to it, so if the flashing cycle of the flashing light is constant or uniform, it will quickly lose interest and look away.

Therefore, in the present invention, the light emitting pattern is randomized to attract the viewer's interest for a longer period of time.

FIG. 1 shows an example of a light-emitting decorative product according to the present invention, in which (1) is a battery, (2)
is a PN (pseudorandom) binary signal generation circuit, (3a, 3
b) is a pair of light emitting diodes. In this one, one of the light emitting diodes is always lit, but the frequency at which they change is random for practical purposes, so the viewers won't get bored. It is preferable to use light-emitting diodes of different colors, such as red and green, which are symmetrical to each other, rather than using two light-emitting diodes of the same color, but even the same color can be sufficiently effective for the purpose. On the other hand, the clock for generating the PN signal is
If the flicker frequency is too fast or too slow, the effect will be insufficient, and if it is not sufficiently lower than the flicker frequency of the naked eye, it will not be noticeable. It is undesirable for the time to be longer than 2-4 seconds. The limit is 3 seconds (0.33H21st place.Also, PN
If the period of the signal is so short that it goes through the entire cycle while you stop and look at it, it will not be effective in terms of purpose. Preferably, the length should be such that the periodicity cannot be easily detected even by standing still and looking at it. For example, 30 seconds to 1 minute or more is sufficient. Therefore, for example, if 3-4 H2 is used as the shift clock of the PN generating circuit, it would be good if the period length was 127 or more. In the case of m-series, this can be generated by a seven-stage shift register and an additional exclusive OR gate. However, the period length and clock frequency may be essentially arbitrary within the scope of purpose with respect to the implementation of the present invention.

FIG. 2 shows another embodiment of the present invention, in which multiple pairs of light emitting diodes are used and configured to blink at different phases by receiving signals of different phases from one PN generating circuit. has been done. It is even more effective to blink a large number of light emitting diodes in a seemingly random manner like this. In this case, if the relative time delay between multiple pairs is several seconds, the mutual relationship is nearly impossible to detect with the naked eye.

As a power supply means, it is preferable to use a built-in battery if the device is portable or worn, but if the lead wire is pulled out and attached externally, a larger battery with a longer life can be used. However, in the case of fixed decorations, it is obvious that the commercial power supply may be rectified and used.

FIG. 3 shows a device designed to prevent erroneous or useless discharge of the battery in the case of a portable battery built-in type. That is, a phototransistor (4) is provided adjacent to the light emitting diode group, and the surrounding light to be detected is
It can be warped depending on the brightness.

As described above, the present invention is advantageous because it provides an ornament that can effectively attract people's attention.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing one embodiment of the invention, and FIGS. 2 and 3 show another, improved embodiment. 121 pages of engravings (L with changes in content) November 27, 1939 6 people making corrections, 5 people making corrections, 8 pages being corrected

Claims (1)

Claims: 1. A light-emitting ornament, characterized in that it comprises electronic means for generating random or pseudo-random binary signals and at least a plurality of light emitting diodes driven by the means. 2. The light-emitting ornament as described above, wherein the light-emitting diodes are arranged in pairs, and each pair is driven complementary to each other. 3. The frequency of the clock of the random binary signal is lower than a predetermined constant human eye flicker frequency and 0.
The above ornament, characterized in that the frequency is higher than 33Hz. 4. The ornament as described above, characterized in that it uses a battery power source and is externally attached. 5. The above-mentioned decorative article, characterized in that it uses a battery power source and has it built-in. 6. The ornament as described above, characterized in that it has a photodetector for monitoring ambient light and a power switch interlocked with the photodetector so as to turn off the power in bright places.