Flicker unit, flash bulb and lamp string suitable for alternating current power supply

Abstract

The invention discloses a flicker unit, a flicker bulb and a lamp string suitable for alternating current power supply. The flicker unit comprises a diode D1, an LED wafer LED5, a control chip IC, a capacitor C1 and a bidirectional Zener diode Z1. The diode D1 forms a reverse isolation loop, the LED wafer LED5 and the control chip IC form a flicker loop, the capacitor C1 forms a power supply loop, the bidirectional Zener diode Z1 forms an alternating current voltage stabilization loop, after the reverse isolation loop and the flicker loop are connected in series, one end is an alternating current contact L1, the other end is an alternating current contact L2, and the power supply loop is connected to the two ends of the flicker loop in parallel. The alternating-current voltage stabilizing loop is connected in parallel between the alternating-current contact L1 and the alternating-current contact L2; the LED flickering unit is arranged in the lamp string, when the alternating-current power supply direction is changed, power is supplied to the control chip IC through the capacitor, it is guaranteed that the control chip IC can work by adopting alternating-current power supply, the LED lamp string has the advantages of being high in efficiency and low in cost of the alternating-current power supply LED lamp string, and meanwhile the control chip controls the LED flickering bulb to be turned on or turned off in a timing mode.

Description

Technical Field

[0001] The invention relates to a lighting or decorative lamp, in particular to an LED flash bulb and a lamp string. Background Art

[0002] LED light strings powered by AC have advantages such as high efficiency and are widely used. For example, the patent document with publication number CN105682296A discloses a positive and negative connected LED light string. This always-on light string works in one branch of the positive half-wave of the AC and in the other branch of the negative half-wave. That is, the working states of the two branches are alternating, and one branch is always not powered.

[0003] The current LED flash bulb has an integrated control chip inside, which relies on the timing function of the control chip to control the lighting or extinguishing of the LED flash bulb. When the LED flash bulb is on, the lamp beads are energized, and when it is off, the lamp beads are not energized, but the control chip needs to be powered all the time. Obviously, this kind of LED flash bulb can only use continuous DC power supply and is not suitable for AC power supply. It cannot be directly installed in the solution of CN105682296A to change the constantly on light string into a flashing light string. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a flashing unit, a flashing bulb and a light string suitable for AC power supply.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A flashing unit, flashing bulb, and light string suitable for AC power supply. The flashing unit includes a diode D1, an LED chip LED5, a control chip IC, a capacitor C1, and a bidirectional Zener diode Z1. The diode D1 constitutes a reverse isolation circuit, the LED chip LED5 and the control chip IC constitute a flashing circuit, the capacitor C1 constitutes a power supply circuit, and the bidirectional Zener diode Z1 constitutes an AC voltage stabilization circuit. The reverse isolation circuit and the flashing circuit are connected in series, with one end being an AC contact L1 and the other end being an AC contact L2. The power supply circuit is connected in parallel at both ends of the flashing circuit, and the AC voltage stabilization circuit is connected in parallel between the AC contacts L1 and L2.

[0006] An LED flash bulb suitable for AC power supply includes pin A, pin B and a bracket C, the LED chip LED5 is fixed on the bracket C, the diode D1 is fixed on the pin A, the control chip IC and the bidirectional Zener diode Z1 are fixed on the pin B, and the capacitor C1 is fixed between the pin B and the bracket C; one end of the diode D1 is electrically connected to the pin A, and the other end is electrically connected to one end of the LED chip LED5 through a wire, the other end of the LED chip LED5 is connected to one end of the control chip IC through a wire, and the other end of the control chip IC is electrically connected to the pin B, one end of the bidirectional Zener diode Z1 is electrically connected to the pin A through a wire, and the other end is electrically connected to the pin B, one end of the capacitor C1 is electrically connected to the pin B, and the other end is electrically connected to the bracket C.

[0007] A lens is packaged on the upper portion of the pin A, pin B and bracket C, and the diode D1, LED chip LED5, control chip IC, capacitor C1 and bidirectional Zener diode Z1 are all packaged in the lens.

[0008] A reflective cup is provided on the top of the bracket C, and the LED chip LED5 is fixed in the reflective cup.

[0009] An LED light string suitable for AC power supply comprises the LED flashing unit.

[0010] An LED light string suitable for AC power supply comprises the LED flash bulb.

[0011] The LED light string also includes a forward load and a reverse load, which are connected in parallel and then in series in the AC flashing LED lighting circuit; the forward load is composed of a number of LED lamp beads connected in series in the same direction; the reverse load is composed of a number of LED lamp beads connected in series in the same direction, and the polarity of the LED lamp beads in the forward load is opposite to the polarity of the LED lamp beads in the reverse load.

[0012] The LED light string also includes a light-emitting module composed of two LED lamp beads connected end to end. There are multiple light-emitting modules, including lamp group LED1, lamp group LED2, lamp group LED3 and lamp group LED4. The lamp group LED1, lamp group LED2, lamp group LED3 and lamp group LED4 are connected in series and then connected in series with the LED flash bulb.

[0013] The LED light string further includes a resistor R1 and a resistor R2, which are connected in series and then connected in series with the LED flash bulb.

[0014] The control chip IC adopts HW1201A chip.

[0015] The beneficial effects of the present invention are as follows: the present invention sets an LED flashing unit in the light string, and when the AC power supply direction changes, the control chip IC is powered by the capacitor, ensuring that the control chip IC can also work with AC power supply, so that the light string can not only flash and light up, but also work with AC power supply, combining the advantages of high efficiency and low cost of AC-powered LED light strings, and at the same time realizing the timing control of the control chip to light up or extinguish the LED flash bulb. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] Figure 1 This is the circuit diagram of the LED flashing unit.

[0018] Figure 2 is a circuit diagram of another embodiment of an LED flashing unit.

[0019] Figure 3 This is the circuit diagram of the LED light string.

[0020] Figure 4 2 is a circuit diagram of another embodiment of an LED light string.

[0021] Figure 5 It is a structural diagram of LED flash bulb. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0023] It is to be understood that these descriptions are illustrative only and are not intended to limit the scope of the invention.

[0024] Reference Figures 1 to 5 A flashing unit, a flashing bulb, and a light string suitable for AC power supply, the flashing unit comprising a diode D1, an LED chip LED5, a control chip IC, a capacitor C1, and a bidirectional Zener diode Z1; the control chip IC employing an HW1201A chip; the diode D1 constituting a reverse isolation circuit, the LED chip LED5 and the control chip IC constituting a flashing circuit, the capacitor C1 constituting a power supply circuit, and the bidirectional Zener diode Z1 constituting an AC voltage stabilizing circuit; the reverse isolation circuit and the flashing circuit being connected in series, one end of which is an AC contact L1, and the other end of which is an AC contact L2; the power supply circuit being connected in parallel at both ends of the flashing circuit, and the AC voltage stabilizing circuit being connected in parallel between the AC contacts L1 and L2; Figure 1As shown in , ACF is the above-mentioned LED flashing unit; the present invention sets the LED flashing unit in the light string. When the AC power supply direction changes, the control chip IC is powered by the capacitor to ensure that the control chip IC can also work with AC power supply, so that the light string can not only flash and light up, but also work with AC power supply. It has the advantages of high efficiency and low cost of AC-powered LED light strings, and at the same time realizes the timing control of the control chip to light up or extinguish the LED flash bulb. According to the functional characteristics of the control IC, it can be as follows Figure 1 As shown, the diode D1, LED chip LED5 and control chip IC are connected in series to form a circuit, which can also be Figure 2 As shown, the diode D1, the control chip IC and the LED chip LED5 are connected in series in sequence to form a loop.

[0025] An LED flash bulb suitable for AC power supply, including pin A, pin B and bracket C, the LED chip LED5 is fixed on the bracket C, the diode D1 is fixed on the pin A, the control chip IC and the bidirectional Zener diode Z1 are fixed on the pin B, and the capacitor C1 is fixed between the pin B and the bracket C; one end of the diode D1 is electrically connected to the pin A, which can be connected by wire connection or direct welding, and the other end is electrically connected to one end of the LED chip LED5 through a wire, the other end of the LED chip LED5 is connected to one end of the control chip IC through a wire, and the other end of the control chip IC is electrically connected to the pin B, and the control chip IC The other end can be connected to pin B by wire connection or direct welding. It should be noted that some control chip ICs have multiple pins, such as a power supply terminal, a current input terminal for providing working current to the LED chip LED5, a current output terminal, etc. The one end and the other end of the control chip IC here refer to the terminals for providing working current to the LED chip LED5, that is, the current input terminal and the current output terminal for providing working current to the LED chip LED5. One end of the bidirectional Zener diode Z1 is electrically connected to the pin A through a wire, and the other end is electrically connected to the pin B. One end of the capacitor C1 is electrically connected to the pin B and can be connected by wire connection or direct welding, and the other end is electrically connected to the bracket C.

[0026] A lens is packaged on the upper portion of the pin A, pin B and bracket C, and the diode D1, LED chip LED5, control chip IC, capacitor C1 and bidirectional Zener diode Z1 are all packaged in the lens.

[0027] A reflective cup is provided on the top of the bracket C, and the LED chip LED5 is fixed in the reflective cup.

[0028] An LED light string suitable for AC power supply comprises the LED flashing unit or LED flash bulb.

[0029] Example 1, as Figure 3 As shown in the figure, the LED light string also includes a light-emitting module composed of two LED lamp beads connected end to end. The light-emitting module is provided with multiple ones, including lamp group LED1, lamp group LED2, lamp group LED3 and lamp group LED4. The lamp group LED1, lamp group LED2, lamp group LED3 and lamp group LED4 are connected in series and then connected in series with the LED flash bulb.

[0030] Example 2, as Figure 4 As shown in the figure, the LED light string also includes a forward load and a reverse load, which are connected in parallel and then in series in the AC flashing LED lighting circuit; the forward load is composed of a number of LED lamp beads connected in series in the same direction; the reverse load is composed of a number of LED lamp beads connected in series in the same direction, and the polarity of the LED lamp beads in the forward load is opposite to the polarity of the LED lamp beads in the reverse load.

[0031] In addition to the above two methods of connecting LED flashing units and LED lamp beads in series to form a light string that is both constantly on and flashing, the LED light string can also be configured to connect multiple LED flashing units in series to form a light string that only flashes.

[0032] The LED light string further includes a resistor R1 and a resistor R2, which are connected in series and then connected in series with the LED flash bulb.

[0033] The control chip IC adopts HW1201A chip; HW1201A chip adopts CMOS technology, has the advantages of low power consumption, wide operating voltage, and strong anti-interference ability; and has a built-in LED single flash.

[0034] When the LED flashing unit operates on the positive half-wave of AC power, current flows from AC contact L1, one path flowing through diode D1 to power LED chip LED5, illuminating it while also providing operating current to the control chip IC and charging capacitor C1. The other path flows through bidirectional Zener diode Z1 and out of AC contact L2. When the LED flashing unit operates on the negative half-wave of AC power, current flows from AC contact L2. Due to the cutoff effect of diode D1, current only flows through bidirectional Zener diode Z1 and out of AC contact L1. Capacitor C1 releases its charge to provide operating current to the control chip IC. If the capacitance of capacitor C1 is large enough, it can also power both the control chip IC and LED chip LED5.

[0035] In the present invention, the term "plurality" refers to two or more, unless expressly limited otherwise. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] It should be noted that when an element is referred to as being "assembled to," "mounted to," "fixed to," or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0037] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An LED flashing unit suitable for AC power supply, characterized in that It includes a diode D1, an LED chip LED5, a control chip IC, a capacitor C1 and a bidirectional Zener diode Z1; the diode D1 constitutes a reverse isolation circuit, the LED chip LED5 and the control chip IC constitute a flashing circuit, the capacitor C1 constitutes a power supply circuit, and the bidirectional Zener diode Z1 constitutes an AC voltage stabilizing circuit. After the reverse isolation circuit and the flashing circuit are connected in series, one end is an AC contact L1, and the other end is an AC contact L2. The power supply circuit is connected in parallel at both ends of the flashing circuit, and the AC voltage stabilizing circuit is connected in parallel between the AC contact L1 and the AC contact L2.

2. An LED flash bulb suitable for AC power supply, characterized in that It includes pin A, pin B and bracket C, the LED chip LED5 is fixed on the bracket C, the diode D1 is fixed on the pin A, the control chip IC and the bidirectional Zener diode Z1 are fixed on the pin B, and the capacitor C1 is fixed between the pin B and the bracket C; one end of the diode D1 is electrically connected to the pin A, and the other end is electrically connected to one end of the LED chip LED5 through a wire, the other end of the LED chip LED5 is connected to one end of the control chip IC through a wire, and the other end of the control chip IC is electrically connected to the pin B, one end of the bidirectional Zener diode Z1 is electrically connected to the pin A through a wire, and the other end is electrically connected to the pin B, one end of the capacitor C1 is electrically connected to the pin B, and the other end is electrically connected to the bracket C.

3. The LED flash bulb suitable for AC power supply according to claim 2, characterized in that A lens is packaged on the upper part of the pin A, the pin B and the bracket C, and the diode D1, the LED chip LED5, the control chip IC, the capacitor C1 and the bidirectional Zener diode Z1 are all packaged in the lens.

4. The LED flash bulb suitable for AC power supply according to claim 2, characterized in that A reflective cup is disposed on the top of the bracket C, and the LED chip LED5 is fixed in the reflective cup.

5. An LED light string suitable for AC power supply, characterized in that The invention comprises the LED flashing unit as claimed in claim 1.

6. An LED light string suitable for AC power supply, characterized in that It comprises the LED flash bulb as claimed in any one of claims 2 to 5.

7. The LED light string suitable for AC power supply according to claim 6, characterized in that It also includes a forward load and a reverse load, which are connected in parallel and then in series in an AC flashing LED lighting circuit; the forward load is composed of a number of LED lamp beads connected in series in the same direction; the reverse load is composed of a number of LED lamp beads connected in series in the same direction, and the polarity of the LED lamp beads in the forward load is opposite to the polarity of the LED lamp beads in the reverse load.

8. The LED light string suitable for AC power supply according to claim 6, characterized in that It also includes a light-emitting module composed of two LED lamp beads connected end to end. The light-emitting module is provided with multiple ones, including lamp group LED1, lamp group LED2, lamp group LED3 and lamp group LED4. The lamp group LED1, lamp group LED2, lamp group LED3 and lamp group LED4 are connected in series and then connected in series with the LED flash bulb.

9. The LED light string suitable for AC power supply according to claim 7 or 8, characterized in that The invention also includes a resistor R1 and a resistor R2, which are connected in series with the LED flash bulb.

10. The LED flash bulb suitable for AC power supply according to claim 2, characterized in that The control chip IC adopts HW1201A chip.

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