Decorative lamps

Abstract

The present invention relates to a decorative lamp group which comprises power supply, lamp group and control unit; control unit is respectively connected with power supply and lamp group, said lamp group is formed from several light bulbs; control unit comprises a microprocessor, the microprocessor can be used for respectively picking up current signals of front part and rear part of positive half-cycle and front part and rear part of negative half-cycle of sine-wave of commercial power, these current signals can be transferred to lamp group by means of control unit and received by lamp group respectively according to the order to bulb arrangement. Said invention can reduce cost of decorative lamp group and can prolong the service life of lighting devices.

Description

technical field [0001] The invention relates to a decorative lamp group, in particular to a decorative lamp group which can automatically reduce the power supply voltage and can switch different lamp groups to emit light. Background technique [0002] Decorative lamps are generally connected in parallel and in series. The above two connection methods can be divided into single-channel and multi-channel. Among them, the single-channel lamp group only needs to use one wire. Although it is simple and economical, it lacks in function. Although multi-channel parallel or multi-channel series light groups require a large number of wires to assemble, for example, four-way requires at least four light lines, but they can have a variety of light changes. Therefore, traditional decorative lights generally use multiple It can be connected in parallel or in series to make various changes in the light. [0003] Such as figure 1 As shown, it represents the connection mode of the general ...

AI Technical Summary

Problems solved by technology

[0002] Decorative lamps are generally connected in parallel and in series. The above two connection methods can be divided into single-channel and multi-channel. Among them, the single-channel lamp group only needs to use one wire. Although it is simple and economical, it lacks in function. Although multi-channel parallel or multi-channel series light groups require a large number of wires to assemble, for example, four-way requires at least four light lines, but they can have a variety of light changes. Therefore, traditional decorative lights generally use multiple Connect in parallel or in series to make various changes in lighting

[0003] like figure 1 As shown, it represents the connection mode of the general series lamp group. The series lamp group 1 can connect a large number of small low-voltage bulbs or LED light-emitting diodes in series. Taking four bulbs 11, 12, 13, and 14 as an example to illustrate, but due to the series connection As long as any bulb in lamp group 1 is damaged, the string of bulbs will not light up at all. For example, if one bulb 11 is damaged, the other bulbs 12, 13, and 14 will not light up, which is not easy to use.

Therefore, it is generally preferred to use parallel lamp groups, such as figure 2 As shown, if one of the bulbs (taking four bulbs as an example) 21 in the parallel lamp group 2 is damaged, the remaining good bulbs 22, 23, and 24 can still continue to shine, but because the bulbs 21, 22 used in the parallel lamp group 2 , 23, 24 have higher voltages, and the power of each bulb 21, 22, 23, 24 is large, thus the total number of bulbs is limited. For this reason, someone artificially increases the lamp number of the parallel lamp group 2, and adds a transformer 25 (like image 3 As shown), to use the transformer 25 to reduce the voltage, so that some small bulbs or LEDs 21'22'23'24' decorated with ornaments can be ignited, but the transformer 25 has a certain weight, and the price is not cheap. However, general decoration Lamp groups still generally use single-channel parallel lamp groups, such as building fixed wiring, etc., can use this kind of lamp group circuit to increase the function of changing light activity of the lamp group, but the above-mentioned existing multifunctional lamp groups need to use a large number of Wires, and although this kind of light group can be controlled electronically, the circuit wiring used in it is quite a lot, which will still cause waste of wires

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