Multiloop decorative light with snowing effect and decorative light cluster

Abstract

The invention discloses a multiloop decorative light with snowing effect which comprises a control circuit board and at least two principal lines; wherein the control circuit board comprises a control unit, at least two first control switches and at least two second control switches; a first end of each principle line is connected with a power source by the first control switches and grounded by the second control switches; two groups of LEDs with opposite polarity are connected in parallel between second ends of arbitrary two principal lines; control ends of the first control switches and the second control switches are connected with output ends of the control unit; the first control switches and the second control switches are in breakover or disconnected according to control signals output by the control unit; the exteriors of the control circuit board or the LED are sheathed with a light permeation tube which is provided with a power line connected with the control circuit and fixedly connected with the light permeation tube. The invention adopts n principal lines to realize N*(N-1) circuits, reduces the using numbers of the principle lines, greatly simplifies the circuit structure and simultaneously reduces the cost of the product.

Description

【Technical field】 [0001] The invention relates to a decorative lamp, in particular to a multi-circuit decorative lamp with snowing effect and a decorative lamp group. 【Background technique】 [0002] In order to achieve a good decorative effect, the traditional decorative light strings are generally set to have the function of strobe or color change or both, especially the Christmas decorative light strings. In order to create a icy and snowy atmosphere, a snow Effect of the decorative light string more and more people of all ages. The circuit principle diagram of decorative lamp product in this prior art refers to figure 1 As shown, the existing design is a circuit design using N+1 main lines to realize N loops. The product shown in the figure includes 16 series-connected light strings 10, which are composed of three LED diodes connected in series. One end of each series light string 10 is connected in parallel with the main line L17, and the main line L17 is electrically ...

AI Technical Summary

Problems solved by technology

There are many disadvantages in this design. First, there are too many main lines close to the control chip. If there are N loops, there will be N+1 main lines, while the main lines away from the control chip will gradually decrease. The lines of the entire decorative light are tapered. This decorative light The appearance is ugly, the overall decorative effect is poor, and the main line is also particularly wasted; secondly, if N loops are to be realized, N main lines must be connected to the control chip for control. If the decorative lamp uses more loops, the entire The circuit design is particularly complicated; similarly, if there are more loops, the pins of the control chip used will also increase, the corresponding control circuit board will increase accordingly and the electronic components will also increase accordingly, and the shape of the decorative lamp will appear large. Small defects, the more circuits of decorative lights, the higher the cost, this design is not easy to be widely used in the market

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