WO2018023490A1

WO2018023490A1 - Startup control circuit for led lights

Info

Publication number: WO2018023490A1
Application number: PCT/CN2016/093056
Authority: WO
Inventors: 袁志贤
Original assignee: 袁志贤
Priority date: 2016-08-03
Filing date: 2016-08-03
Publication date: 2018-02-08

Abstract

A startup control circuit for LED lights is used for controlling N LED light groups. The startup control circuit comprises: an external power supply (3), a control circuit (11), a drive circuit (13), a first switch (21), a second switch (22), and a delay circuit (12). The first switch (21) is connected between the external power supply (3) and the control circuit (11). The control circuit (11), the delay circuit (12) and the drive circuit (13) are connected in series in this order. The second switch (22) comprises a movable end (221) and the first to Nth immovable ends (222, 223). The movable end (221) of the second switch (22) is connected to the drive circuit (13), and the first to the Nth immoveable ends (222, 223) of the second switch (22) are each connected to the first to Nth LED light groups (4, 5). The delay circuit (12) is used to delay the time for the current of the external power supply (3) to flow into the drive circuit (13), after passing through the control circuit (11). The startup control circuit has a simple structure and a relatively low cost.

Description

Start control circuit for LED lights

Technical field

The utility model relates to a starting control circuit, in particular to a starting control circuit for an LED lamp.

Background technique

In recent years, due to the maturity of LED (Light Emitting Diode) manufacturing technology, not only can there be a variety of color choices, but also has practical advantages such as environmental protection, power saving, long life, and has gradually replaced traditional lamps. Please refer to FIG. 1 . In the current LED device, if multiple sets of LED lights are included, each set of LED lights needs to be provided with a driving circuit and a control circuit, wherein the driving circuit is connected with the corresponding LED lamp, and all The control circuits are all connected to the switch. The external power supply and the control circuit are connected through the control switch, and then the operation of the LED lamp is controlled by the drive circuit. Although the circuit is relatively simple, it is only necessary to increase the corresponding control circuit and drive circuit according to the number of LED lamps. However, if the number of LED lamps required for the entire LED device is large, the cost of the entire startup control circuit is also high.

Utility model content

The technical problem to be solved by the embodiments of the present invention is to provide a start control circuit for an LED lamp with a simple structure.

The utility model provides a starting control circuit for an LED lamp, which is used for controlling N LED lamp groups, and the starting control circuit comprises: an external power source, a control circuit, a driving circuit, a first switch, a second switch and a delay circuit, the first switch is connected between the external power source and the control circuit, the control circuit, the delay circuit and the driving circuit are sequentially connected in series, and the second switch comprises a moving end and first to Nth non-moving ends, The second opening The off end is connected to the driving circuit, and the first to Nth fixed ends of the second switch are respectively connected to the first to Nth LED groups; the delay circuit is used for delaying the current of the external power source through the control circuit The time that flows into the drive circuit.

The first switch includes a dynamic end, first and second fixed ends, and the movable end of the first switch is connected to an external power source, and the first and second fixed ends of the first switch are both controlled The circuits are connected.

The startup control circuit of the present invention utilizes the first switch to the Nth switch to allow the circuit device to respectively turn on any one of the first LED lamp group to the Nth LED lamp group to simplify the entire circuit device, and The delay circuit prevents the occurrence of glitch and prolongs the service life.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any creative work;

1 is a block diagram of a preferred embodiment of a start control circuit for an LED lamp of the present invention.

2 is a circuit diagram of the startup control circuit shown in FIG. 1.

3 is a block diagram of a conventional start control circuit.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Some embodiments of the invention, not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

First, it is necessary to explain some of the terms appearing in this article before describing the embodiments. E.g:

The terms "first", "second", and the like are used herein to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a "first" element may also be referred to as a "second" element without departing from the teachings of the invention.

In addition, it is to be understood that when an element is "connected" or "coupled" to another element, it can be directly connected or directly coupled to the other element or the intermediate element. In contrast, when an element is referred to as “directly connected” or “directly connected” to another element, the.

The various terms appearing herein are merely used to describe the specific embodiments and are not intended to limit the invention. Unless the context clearly indicates otherwise, the singular forms are intended to include the plural.

When the terms "include" and/or "include" are used in the specification, the terms are used to indicate the presence of the features, integers, steps, operations, components and/or components, but do not exclude one or more other features, The existence and/or addition of the whole, steps, operations, elements, components and/or groups thereof.

About the embodiment:

Please refer to FIG. 2, which is a block diagram of a preferred embodiment of a start control circuit for an LED lamp of the present invention. This embodiment uses two sets of LED light groups (including The first LED lamp group 4 and the second LED lamp group 5) will be described as an example. The preferred embodiment of the start control circuit for the LED lamp comprises a circuit device 1 and a switch block 2, the circuit device 1 comprising a control circuit 11, a delay circuit 12 and a drive circuit 13. The control circuit 11, the delay circuit 12, and the drive circuit 13 are connected in series.

The switch group 2 includes a first switch 21 and a second switch 22, wherein the first switch 21 is connected between the external power source 3 and the control circuit 11, and the second switch 22 is connected to the first LED group 4. The second LED lamp group 5 is connected to the driving circuit 13.

Specifically, the second switch 22 includes first to third ends, the first end of the second switch 22 is connected to the first LED light group 4, and the second end of the second switch 22 is second and second. The LED lamp group 5 is connected, and the third end of the second switch 22 is connected to the driving circuit 13.

The following describes the working principle of the above startup control circuit:

When the first switch 21 and the second switch 22 are both turned on, the first switch 21 communicates with the external power source 3 and the control circuit 11, and the second switch 22 communicates with the driving circuit 13 and the first LED lamp. Group 4 or drive circuit 13 and second LED light set 5. At the same time, since the first switch 21 and the second switch 22 have a time difference when switching the on state, if the first switch 21 is connected to the external power source 3 to pass the power source through the driving circuit 13, the second switch 22 is not connected to the first LED. The lamp group 4 or the second LED lamp group 5 and the driving circuit 13 cause the second switch 22 to generate a glitch when the first LED lamp group 4 or the second LED lamp group 5 and the driving circuit 13 are turned on, thereby causing a driving circuit. 13. The first LED lamp group 4 or the second LED lamp group 5 is damaged, and the delay circuit 12 provided in the circuit device 1 in the present embodiment can delay the time when the power source flows into the driving circuit 13, and thus the second switch 22 can be made. There is enough time to connect the first LED light group 4 or the second LED light group 5 with the driving circuit 13 to avoid The occurrence of the spurt state, whereby a set of circuit devices 1 of the present invention can drive the first LED illuminator 4 and the second LED illuminator 5, respectively, without the occurrence of a glitch.

Referring to FIG. 3, the first switch 21 and the second switch 22 of the present invention are single-pole double-throw switches. The first switch 21 includes a movable end 211, a first fixed end 212 and a second fixed end 213. The second switch 22 includes a movable end 221, a first fixed end 222 and a second fixed end 223. The movable end 211 of the first switch 21 is connected to the external power source 3, and the first fixed end 212 and the second fixed end 213 are both connected to the control circuit 11. The movable end 221 of the second switch 22 is connected to the driving circuit 13, the first fixed end 222 is connected to the first LED lamp group 4, and the second fixed end 223 is connected to the second LED lamp group 5.

In this embodiment, the first switch 21 and the second switch 22 have the following two states: (1) the movable end 211 of the first switch 21 is electrically connected to the first fixed end 212 and the movable end 221 of the second switch 22 The first fixed end 222 is turned on, as shown by the solid line in FIG. 3; (2) the movable end 211 of the first switch 21 is electrically connected to the second fixed end 213, and the movable end 221 of the second switch 22 is turned on. The fixed end 223 is shown by a broken line in the figure.

The delay circuit 12 can delay the time when the power source flows into the driving circuit 13, so that the second switch 22 has enough time to turn on the first LED lamp group 4 or the second LED lamp group 5 and the driving circuit 13, thereby avoiding The occurrence of a violent state.

The start control circuit of the present invention utilizes the first switch 21 and the second switch 22 provided in the switch group 2 to allow the circuit device 1 to respectively turn on the first LED light group 4 or the second LED light group 5 to simplify the circuit. The device 1 and the delay circuit 12 of the circuit device 1 prevent the occurrence of a surge, thereby prolonging the service life.

In this embodiment, two sets of LED light groups are taken as an example for description. Of course, other embodiments Several LED light groups can also be included in the formula. When the N LED lamp sets are included, the second switch corresponds to the dynamic end, the first to the Nth fixed end, wherein the movable end of the second switch is connected to the driving circuit, and the first to the Nth fixed ends Then it can be connected to N LED light groups.

The above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the specification and the drawings of the present invention, or directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

A start control circuit for an LED lamp for controlling N LED lamp sets, the start control circuit comprising: an external power supply, a control circuit and a drive circuit, wherein the start control circuit further comprises a first switch a second switch and a delay circuit, the first switch is connected between the external power supply and the control circuit, the control circuit, the delay circuit and the drive circuit are connected in series, and the second switch comprises a moving end, first to first a non-moving end, the movable end of the second switch is connected to the driving circuit, and the first to Nth fixed ends of the second switch are respectively connected to the first to Nth LED lamp groups; The time during which the current of the external power supply is delayed by the control circuit flowing into the drive circuit.
The start control circuit for an LED lamp according to claim 1, wherein the first switch comprises a movable end, first and second fixed ends, and the movable end of the first switch is connected to an external power source. The first and second fixed ends of the first switch are all connected to the control circuit.